Last year I built the platform 'Tindex'. It was an index of Tinder profiles so people could search by name, gender and age.

We scraped the Tinder profiles through a Tinder API which was discontinued not long ago, but weird enough it was still intact and one of my friends who was also working on it found out how to get api keys (somewhere in network tab at Tinder Online).

Except name, gender and age we also got 3 distances so we could calculate each users' location, then save the location each 15 minutes and put the coordinates on a map so users of Tindex could easily see the current location of a specific Tinder user.

Fun note: we also got the Spotify data of each Tinder user, so we could actually know on which time and which location a user listened to a specific Spotify track.

Later on we started building it out: A chatbot which connected to Tinder so Tindex users could automatically send a pick up line to their new matches (Was kinda buggy, sometimes it sent 3 pick up lines at ones).

Right when we started building a revenue model we stopped the entire project because a friend of ours had found out that we basically violated almost all terms.

Was a great project, learned a lot from it and actually had me thinking twice or more about online dating platforms.

Below an image of the user overview design I prototyped. The data is mock-data.

How to calculate walking distance

Km/m/inch ❌
3 songs ✔️

Sales employee Bob wants a clickable blue button.

Bob tells product owner Karen about his unstoppable desire for clickable blue buttons.

Karen assigns points for potential and impact (how much does a blue button improve Bob's life, how many people like Bob desire blue buttons)

Karen asks the button team how hard it is to build a button. The button team compares the request to a reference button they've built before, and gives an ease score, with higher score being easier (inverse of scrum points).

These three scores are combined to give a priority score. The global buttonbacklog is sorted by priority.

Once every two weeks (a "sprint") the button team convenes, uses the ease scores to assign scrum points. Difficult tasks are broken up into smaller tasks, because there is a scrum point upper limit. They use the average of the last 5 sprints to calculate each developer's "velocity".

The sprint is filled with tasks, from the top of the global button backlog, up to the team's capacity as determined by velocity. Approximate due dates are assigned, Bob is a happy Bob.

What if boss Peter runs into the office screaming "OUR IMPORTANT CLIENT WANTS A FUCKING PINK BUTTON WHICH MAKES HEARTS APPEAR"?

Devs tell boss to shut the fuck up and talk to Karen. Karen has a carefully curated list of button building tasks sorted by priority, can sedate boss with valium so he calms the fuck down until he can make a case for the impact and potential of his pink button.

Karen might agree that Peter's pink button gets a higher priority than Bob's blue button.

But devs are nocturnal creatures, easily disturbed when approached by humans, their natural rhythms thrown out of balance.

So the sprint is "locked", and Peter's pink button appears at the top of the global backlog, from where it flows into the next sprint.

On rare occasions a sprint is broken open, for example when Karen realizes that all of the end users will commit suicide if they don't have a pink heart-spawning button.

In such an event, Peter must make Bob happy (because Bob is crying that his blue button is delayed). And Peter must make the button team of devs happy.

This usually leads to a ritual involving chocolate or even hardware gift certificates to restore balance to the dev ecosystem.

She: Do dates make you nervous?

He: Oh yes, especially when the client and server are in different timezones and I need to calculate the difference and they are in different formats and I mean why can’t everyone just use ISO8601, right?

She: Okay never mind bye..........

Probably the biggest one in my life.
TL:DR at the bottom

A client wanted to create an online retirement calculator, sounds easy enough , i said sure.

Few days later i get an email with an excel file saying the online version has to work exactly like this and they're on a tight deadline

Having a little experience with excel, i thought eh, what could possibly go wrong, if anything i can take off the calculations from the excel file

I WAS WRONG !!!
17 Sheets, Linking each other, Passing data to each sheet to make the calculation
( Sure they had lot of stuff to calculate, like age, gender, financial group etc etc )

First thing i said to my self was, WHAT THE FREAKING FUCK IS THIS ?, WHAT YEAR IS THIS ?

After messing with it for couple of hours just to get one calculation out of it, i gave up

Thought about making a mysql database with the cell data and making the calculations, but NOOOO.
Whoever made it decided to put each cell a excel calculation ( so even if i manage to get it into a database and recode all the calculations it would be wayyy pass the deadline )

Then i had an epiphany

"What if i could just parse the excel file and get the data ?"
Did a bit of research sure enough there's a php project
( But i think it was outdated and takes about 15-25 seconds to parse, and makes a copy of the original file )

But this seemed like the best option at the time.
So downloaded the library, finished the whole thing, wrote a cron job to delete temporary files, and added a loading spinner for that delay, so people know something is happening
( and had few days to spare )

Sent the demo link to client, they were very happy with it, cause it worked same as their cute little excel file and gave the same result,

It's been live on their website for almost a year now, lot of submissions, no complains
I was feeling bit guilty just after finishing it, cause i could've done better, but not anymore

Sorry for making it so long, to understand the whole thing, you need to know the full story

TL:DR - Replicated the functionality of a 17 sheet excel calculator in php hack-ishly.

A guide to estimations.

1) don’t give an immediate answer. The first “timeframe” you give will be held against you and will result in overtime and working weekends.

2) think of a relevant piece of work and the time that took.

2.1) if it’s something you haven’t done before, add some adequate research time.

3) allow half a day of testing for every day of development.

4) add a day as buffer - this is good for on the fly bug fixes

5) calculate time

6) now give an educated estimate.

7) this should take you 5 seconds to get through mentally.

8) if scope creep occurs: goto:1

User Ip Address is too long (maximum is 30 characters).

Okay, dear third-party API, I guess users with IPv6 don't deserve the service... And wtf is 30-char limit for an IP address, when IPv4 can be only 15 characters long, and IPv6 can be up to 39 characters? Did you calculate a weighted average of IP length to get that number?

Number zero rule of computer science: Don't calculate pi in binary

During the first rocket fly to the moon, they developed a calculator for the rocket scientists to calculate the flight.

Today's smartphones have the power to do the calculations for dozens of rockets at once, and what do I do with it?
I PLAY ANGRY BIRDS

Back in my teenage , a friend of mine asked me «Can you make me a software that guesses the result of a football match ?» I said «Sure, but you have to tell me how to calculate the chances of a team»
«Yeah, use the previous performances in the league»
«Ok, but you have to tell me how to calculate the expected result using previous performances» He laughed at me and said «If i knew how to calculate chances of winning/losing, i would not need a software!»
I tried to explain it simply «Computers can execute basic operations like sums or subtractions, and they know how to follow a list of basic instructions to give you a result»
He looked me like «If computers are so stupid like you are telling me now, are we all crazy idiots trying to learn how to use stupid machines??» and stated that i obviously misunderstood the real power of a computer. I walked back home thinking how funny was my friend believing in some kind of magic inside box called pc.

Few years later, i start studying IT at university. In the free time i look for small jobs like website development, small office network setup, pcs repair.
I continue noticing people believing that pcs knows what to do and how to do it.
«You sure I lost my data ? No i didn't do a backup. You sure my pc didn't do a backup ? No i hadn't a backup software»
«Why antivirus asks me what to do with the viruses it found. It should delete them obviously! Change my antivirus, it's too stupid for my pc»
«I want more people finding my business thanks to my website. How I imagine my website ? Yeah it has to be cool and full of cool stuff»

All that boring stories leads to my final question :

is our job dealing with persons who think we are some kind of wizard, well learned about dominating the pc magic ?

Please answer no.Please.

Neural network based 3D indoor location tracking on a moving ship in the middle of the ocean with ar visualization for the crew to find guests.

You are on a cruise, you have an app on your phone to order stuff (drinks, meals etc)
Once you order an indoor location system calculates your position (based signal strength on training) on the ship(x, y, z)(deck, area etc) and sends it to the crew.

The crew wears an ar glass and once your order is ready they get a realtime ar navigation to you.

It was seriously over-engineered 😀
We used the phone’s bluetooth and beacons on the ship to calculate the position based on signal strength.

8 rules of freelancing which newbie should know:

Rule 1: never pick up a half done website.

Rule 2: never take a job where they want to "do things themselves". And don't work with fixed prices if you calculate your price on a best case scenario.

Rule 3: don't do content management

Rule 4: don't promise a sales target on their website.

Rule 5: start sending invoices every money and not just at the end of the project.

Rule 6: Put every website on your own webserver and don't release it untill it's paid.

Rule 7: Don't work for free.

Rule 8: Don't work for free.

Credit: Jhon Dear

Chess engine with (probably) Unknown ways to calculate

That feeling when the company looses a 120k account and it is blamed on your expert opinion and poor handling off the situation when It's really the fuckwits in sales who in their greed for provisions make shitty pitches.

I got a call to attend a meeting with a customer. Present was also the "developer" from the customers side who was to oversee the projects. The pitch was made earlier, but no information was provided beforehand so I was going in blind, covering for a suddenly absent lead. The point was to roughly present how the project was to be executed and I was told to voice my opinion on development time estimate that the clients expert had given. They were outsourcing and had already fired their whole team.

I gave a number based on the provided information and all hell breaks loose. Suddenly it's a total circle jerk. Shit goes down. The "dev" tells that he can do it himself in half the time and starts showing some shitExcelsOfTotalAbsurdness that prove it. I calculate his claim and end up with a result that he has 60+ hours in his day, so I ask why doesn't he do it then? Why the outsourcing if they could just give him a raise and save a ton of cash.. sudden silence and you just can hear the rusty gears turn while they try to make a new excuse.

Well it went south. Today I found out that the client was our sales guys buddy. so TL;DR of it was that our sales guy was trying to make a quick buck and give a break to his buddy and hang the shitbucket on our team. I pointed out that this was a shitty business deal that would go into the red, but the sales guy turned it around and now "I cost company 120k/month account on a long project" and because I acted unprofessionally customer is unhappy.

I FUCKING HATE THIS SHIT

secretly hoping to get fired over this

It all began yesterday in my math lesson.My teacher introduced us into a new subject: The Heron method.
This is a method for iteratively computing the square root of a number which was made up by Hero of Alexandria.
But here's the cool part:
When my teacher said "method" I had the thought that I could make a programm on my TI-82 Stats (my calculator).
So I used the next break to make a little programm that does exactly the same what my mates has to do in several steps, in just one step.
Here is a picture so I can explain the programm:

First it asks for the root that it should calculate then for a value to begin with and finally for the amount of arithmetic operations.
Then it goes trough the algorithm and displays the interim results (this is important for later ...) .
So back in story.It wasn't surprising that we got exercises with this method as homework but through my programm I just needed 5 minutes instead of 20 minutes (like my class mates).

Interviewer: "Using this 2D array and calculate.."
Me: "This input isn't a 2D array though. Do you want me to parse or construct a 2D array then.."
"It is a 2D array."
"Uh.. ok..and if it's not what if we.."
"Look my notes say you must use this input, and treat it as a 2D Array"
"What if I wrote a function for a 2D array similar to this input, but actually a 2D array"
"You must use only the input provided"
Me: does rain dance code for 20 minutes.
Interviewer: "hmm, maybe it wasn't a 2D Array. I like your efforts but that's all the time we have today."

I promise I can code, sometimes. It does help to have correct questions to give correct answers.

Team quarterly capacity planning:

- Confluence document created with a big table (+100 rows) by product / business. Each row is something that needs to be worked on for the coming quarter.

- Row 1 could be an Epic with 15 tickets attached. Row 2 could be adding a single log to our analytics. No consistency.

- For each row, we create a separate confluence document with the "technical details". 75% of the time these remain blank. 1% of the time there is something useful, the rest its a slightly longer version of the description from the bigger document.

- Each row gets a high level estimate by the leads. 50% of the time without sufficient background info to actually do get it accurate.

- These are then copied into the teams excel spreadsheet, where it will calculate if we are over/under capacity.

- We will go backwards and forwards between confluence and excel until we are "close enough" to under capacity without being too much.

- Once done, we then need to copy them into the org/division's excel spreadsheet. This document is huge, has every team on it and massive 50pt text saying "Do not put a filter on this document".

- Jira tickets + Epics will now be created for each one, with all the data be copied over by hand, bit by bit, by product. Often missing something.

- Last week, at the end of this process for Q2 (2 weeks late), 6 of the leads were asked to attend a 30 minute meeting to discuss how to group the line items together because we had too many for the bigger excel spreadsheet.

- This morning I was told business weren't happy with one of our decisions to delay one line item. Although they were all top priority (P0), one of them was actually higher than that again (P-1?) and we need to work it back in.

... so back to step 1

- Mid way through Q2, a new document will be created for Q3. Work items that didn't make the cut will be manually copied from one to the other. 50/50 whether anything that didn't get done on time in Q2 will make its way to the Q3 doc.

- "Tech excellence" / "Tech debt" items (unit/UI tests, documentation, logging, performance, stability etc) will never be copied over. Because product doesn't understand them and assumes therefore that they are unimportant.

==================

PS: I'd like to say this was a rare event for Q2, but no. Q4 and Q1 were so bad, we were made assurances from the director of engineering that he would fix this process for Q2. This is the new and improved process (I shit you not) that has resulted in nothing tangible.

Devrant::Mathematicians, unite!

I found a new way to calculate running average.

Old:
a(o, n, i) = (o(i - 1) + n) / i

New:
a(o, n, i) = o + (n - o) / i

a: New average function
o: Old average
n: Element to add to average
i: New number of elements

Manager: I don’t understand what is so complicated about this feature. Under a certain set of conditions do one thing, under a separate set of conditions do another. It’s just an if else statement! Those take seconds to write!

Dev: The problem is the memory required to calculate the conditions is quite cumbersome

Manager: Well then find a faster way! It’s just an if else!

Dev: …

The first paid work I did was to write a program to calculate something mathematicaly for a senior. And my payment was a cup of tea and cigratte

I've decided that whenever a non technical person be it a client or a non technical PM tells me it's easy or tells me it'll take only x hours, I'm going to tell them to either do it themselves, or let me do my estimate calculation. You don't fucking understand one line of what I do yet you can magically calculate the amount of time I'll take on the task? No fucking thank you sir.

Fuck Firefox's CSS engine! Why is it so fucking buggy?

I needed to position some elements in a circle, so I used Math.cos(Math.PI / 2) to calculate their x positions. So, mathematically speaking, that should return 0, right? Turns out in JS it doesn't (because fuck precision). It actually returns 6.123233995736766e-17 and I was using that in the style, like top: offset + that.

In chrome it was working perfectly, but in Firefox all hell broke loose. All animations stopped working, scripts stopped working, demons were eating people alive.

And I lost hours hunting that down. My fault because I should have tested it immediately on other browsers, but fuck!

RANT TIME!

Sorry guys, I know this is devRant and probably not a place to post this but am fucking burning with fury and fatigue! I should probably develop elecRant and post it there instead.

I FUCKING HATE POWER ELECTRONICS!!

I am in my final year of electrical engineering and I can fucking say with confidence that power electronics is the most fucked up unit I have seen in my life. A whole load of useless math from simple RLC circuits just to make students' lives miserable. For those who might not know, power electronics is some unit that involves use of solid state electronics(transistors, diodes etc) for power applications(switching mostly). Basically things like inverters and converters. UPS systems are an example of their applications.
Now don't be fooled by how that sounds cool and so smart, this shit is fucked up. These circuits in the attached picture might just seem like simple RLC networks with some BJTs, but they are devils in their own right. They fucking need some advanced unnecessary calculus and Fourier analysis to even calculate the simplest output current!! Worst still, some of these motherfuckers have more than 1 mode of operation,needing one to analyze some fucking 100+ waveforms. I fucking hate this shiit! I hate it!
You might say that i am just being lazy and don't want to study. Let me tell you something, FUCK YOU TOO!!

Me : "hey front end dev, here is an API returing a list of objects, put them in a table"

*Some hours later

Front end : 'Done !"

Me :" Where are the totals?"

front end : 'Api doesn't give me totals"

me : "Calculate them. Just do a sum"

front end : 'I don't know how".

Yeah, "front end" apprently means only html css.... FML

Windows 10 'App Store' Stole My Money.

So I work a 40 hour work week, sometimes more, same as anyone, on my feet, all day.

I get home, buy a little $3.99 app. Won't install. Check it again won't install. I check some guides. Follow all the standard commands, my purchase won't install. Use the tools. won't install.

Naturally I sent off what I'm good at, some hate filled invective

For fucks sake. I'm exhausted, have insomnia and want to wind down. And here microsoft is killing 32bit libraries to dispose of competing services like steam (also fuck gabe in his fat asshole) but I digress.

And they expect us to use their services? Spend our hard earned *fucking money*..and spend half an hour on their dumpster fire fucking 'walled garden' with nothing to fucking show for it?

No refund button. No chat option. Just a fucking feedback hub. Look at it some time. JUST LOOK AT IT. The motherfucking *feedback* hub *frozeup* in the process of my feedback. Microsoft is a sewer of negligent business practices and incompetence.

So I've chosen now to aim two heavy ion cannons at them and warned them too. Two twitter accounts, one with almost 10k followers and another with 15k.

Should have just offered a manual download button microsoft.

My money would have been better spent on alcohol. Cheap alcohol. It's not like it's a lot of money and I don't buy a lot online, but it's the principle. You're fucking *payment* process worked *just fucking fine*.

Anyway can anyone calculate the monetary damage a cumulative quarter million views over the course of a month will do to the reputation of the windows store in dollar amounts?

I'm betting it's going to be a lot fucking more than three fucking ninety nine.

Don't worry microsoft, I'm gonna take it out of your sweet fucking hide.

GO FUCK YOURSELF BY A CRAZY PONY SAFARI !
Fucking useless browser that hide by default the fucking dev tools.
And also it fucking supports flexbox but can't fucking calculate height 100%.
Fucking fuckitty fuck.
Have your website with a shitty ui then. Might as well do a popup saying "switch browser" cause even IE manage to understand height:100%.

now a funny thing that happened to me a few weeks ago:

a recruiter contacted me on linkedin... wait, don't laugh yet, that's not the whole joke (this time)...

...asking whether I'm interested in something, I was like yeah, but I'm looking for part-time because i'd like to not have a mental breakdown after 6 months this time...

her response: "well... I don't have any part-times, but I have an almost part-time..."

" 'almost part-time'? first time I've heard that phrase, what exactly does that mean?"

"it means about 160 hours"

... i sit in confused silence for a bit, then write back as I calculate: "i'm assuming you mean 160 hours a month, which is 40 hours a week, which is 8 hours a day, which is full-time. please point out where am I mistaken."

recruiter: * crickets *

The state of informatics education is just saddening.
You study "Software Development" and then you get to do exams asking you to do some basic linux commands - with full internet access on a computer. People are allowed to fail this and study on. On the other hand you have to do real coding with pen and paper, have to calculate from hex to bin to dec and stuff and most Importantly - know about all kinds of math stuff completely unreleated to cs.
Graph Theory absolutely makes sense in my eyes, but not if it's plain fucken math without even mentioning computers or applications of it. But if you fail that everyone looks weird at you.

I know about coding. I got A's and B's in all the coding exams _without even doing much for them_ but then fail all the fucken math exams. Makes no sense. FML.

Dogecoin hit USD $0.40 recently, which means it's time for the Crypto Rant.

TL;DR: Dogecoin is shit and is logically guaranteed to eventually fall unless it is fundamentally changed.

===========================

If you know how Crypto works under the hood, you can skip to the next section. If you don't, here's the general xyz-coin formula:

Money is sent via transactions, which are validated by *anybody*.

Since transactions are validated by anybody, the system needs to make sure you're not fucking it up on purpose.

The current idea (that most coins use today) is called proof-of-work. In short, you're given an extremely difficult task, and the general idea is you wouldn't be willing to do that work if you were just going to fuck up the system.

For validating these transactions, you are rewarded twofold:

1) You are given a fixed-size prize of the currency from the system itself. This is how new currency is introduced, or "minted" if you prefer.
2) You are given variable-size and user-determined prize called "transaction fees", but it could be more accurately called a "bribe" since it's sole purpose is to entice miners to add YOUR transaction to their block.

This system of validation and reward is called mining.

===========================

This smaller section compares the design o f BTC to Dogecoin - which will lead to my final argument

In BTC, the time between blocks (chunks of data which record transactions and are added to the chain, hence blockchain) is ten minutes. Every ten minutes, BTC transactions are validated and new Bitcoins are born.

In Dogecoin, the time between blocks is only one minute. In Theory, this means that mining Dogecoin is about ten times easier, because the system expects you to be able to solve the proof of work in an average of one minute.

The huge difference between BTC and Doge is the block reward (Fixed amount; new coins minted). The block reward for BTC is somewhat complicated compared to Doge: It started as 50 BTC per block and every 4 years it is halved ("the great halving"). Right now it's 6.25 BTC per block. Soon, the block reward will be almost nothing until BTC hits it's max of 21 million bitcoins "minted".

Dogecoin reward is 10,000 coins per block. And it will be that way for the end of time - no maximum, no great halving. And remember, for every 1 BTC block mined, 10 Doge blocks are mined.

===========================

Bitcoin and Dogecoin are now the two most popular coins in pop culture. What makes me angry is the widespread misunderstanding of the differences between the two. It is likely that most investors buy Dogecoin thinking they're getting in "early" because it's so cheap. They think it's cheap because it isn't as popular as Bitcoin yet. They're wrong. It's cheap because of what's outlined in section two of this rant.

Dogecoin is actually not very far off Bitcoin. Do the math: there's a bit over 100 billion Dogecoin in circulation (130b). There's about 20 million BTC. Calculate their total CURRENT values:

130b * $0.40 = 52b
20m * $60k = 1.2t

...and Doge is rising much, much faster than BTC because of the aforementioned lack of understanding.

The most common thing I hear about Doge is that "nobody expects it to reach Bitcoin levels" (referring to being worth 60k a fucking coin). They don't realize that if Doge gets to be worth just $10 a coin, it will not just reach Bitcoin levels but overtake Bitcoin in value ($1.3T).

===========================

It's worth highlighting that Dogecoin is literally designed to fail. Since it lacks a cap on new coins being introduced, it's just simple math that no matter how much Doge rises, it will eventually be worthless. And it won't take centuries, remember that 100k new Doge are mined EVERY TEN MINUTES. 1,440 minutes in a day * 10K per minute is 14.4 million new coins per day. That's damn near every Bitcoin to ever exist mined every day in Dogecoin

Calculate your experience in a right way!

Agh, holy shit. devRant, I need some love.

I have successfully double-buffered the Windows console (cmd.exe) but all hell breaks loose when you resize the fucking window. The currently active buffer will receive the change in dimensions while the inactive buffer will not, resulting in the window quickly oscillating between the two sizes as the buffers change size.

That got me stuck for about a day. Today, I got it sort of working but it wasn't satisfying at all. I can get it to resize LARGER, but if you resize the window SMALLER, the actual buffer inside the window doesn't change size, so scrollbars appear and I have NO IDEA HOW TO FIX THAT. I somehow need to calculate, or use the API to find, the perfect dimensions (In rows and columns) for the console buffer INSIDE the window buffer for them to not have scrollbars.

And I just - -

I cannot gather the energy to do so right now.

I spent hours finding the solution to this bullshit and ONLY SOLVED HALF MY PROBLEM.

And stack overflow isn't exactly helpful. My problem is so specific that nobody even writes comments on the question.

I guess I need to calculate the amount of characters the screen can hold given the font size and the window size, but fuck, that's a lot of work to do just for something that probably won't even work anyways.

Well, off to the code editor again. Time to inevitably waste my time doing something that won't work.

Yay, programming.

I used to think I was so clever by viewing the source code of websites, and would just scroll through it for fun, but what really got me started in programming was the TI-83 calculator I got in grade 10.

You couldn't view the code of most programs on that calc without a computer connection, but I managed to get my hands on the source code of something simple and learned how to prompt for values and calculate things with them. Before I knew it, I was making little programs in BASIC that did formulas for me (Area/circumference of a circle, etc.). One of my professors caught me showing my calculator to another student in class, and assumed I was being a bad student. When I said I made a program as a shortcut for one of the formulas we were learning, she tried to call my bluff and said to write the whole program on the whiteboard for the class to see. 10 minutes of writing and more than one blank stare from my classmates later, the teacher just waved me off and continued the lesson. I was chuffed :-). I made these simple programs for all my math classes throughout high school.

Unfortunately, my first year of university I took a CS course, and my teacher was probably the worst I've ever had in my life. I decided it wasn't for me, and though I did maintain my general aptitude for tech (and was still the person who fixed everyone's printers and viruses), I took a different path, eventually getting an Arts degree in Anthropology.

Where I live, the market for this is more than stale. In fact, it's completely flat, so I thought I would take a course about programming with Arduinos for fun and see if I should return to school for a different certification. It was AWESOME! I made a wireless weather station with Xbees and sensors and built my own anemometer.

I got a job at a manufacturing company, and had the fortune to build a robot which eventually made it's way to the second season of Battlebots. The level of intelligence and enthusiasm I encountered really inspired me, and now here I am at 31, halfway through a BSc in Computer Science and working for a company that makes 3D printers.

It's been a long journey, but the adventure always starts anew tomorrow.

First story (not rant) :3

So I was asked to set problems for an online programming contest for my college (I'm a sophomore)

The participants were students from my college.

Teacher told me "make as hard as you can"

I gave it my all.

:|

1 person solved the first question. Nobody solved the other four. :|

Not sure if I should be proud or sad.

And if you're wondering - here was my first question -

Sam wants to invest in real estate. He's got X dollars to spend. He knows the expected value per square meter of a given property. He knows the coordinates of the vertices of the polygon shaped properties he's interested in.

(both the values and coordinates for each property are given in input)

Find the maximum return on investment he can get.

(answer is, basically you calculate the area of each polygonal house using half the vector cross product, multiply it with their expected value per square meter, and then apply a dynamic programming - knapsack approach)

;-; I really thought it was a nice question man. ;-; I put so much thought into others too. ;-;

Got ignored. ;-;

FFS GOOGLE, WHAT MAKES YOU THINK THAT A PERSON WHO WANTS TO LEARN MASCHINE LEARNING, DOESN'T KNOW HOW TO CALCULATE THE DISTANCE BETWEEN 2 POINTS???

My first dev was a small pascal application that my dad used in his job to calculate profitability of their rental machines.

Adding up interests, workshop costs and salaries an finally splitting all shared costs according to each items turnover.

Before this my dad did this by hand using an calculator with a paper printout and it usually took around 3 days with interruptions.

With my application he entered the numbers in a grid like interface and all fixed costs in a settings view and hit calculate. Took around 30 minutes.

And if he got updated figures he just loaded the monthly figures from file, changed as needed and got the new numbers in less than 1-2 minutes instead of starting all over.

This was 1987 and personal computers was just finding its way into business.

Remember the post about bruce's constant?(4.5099806905005)

Well apparently theres a convergent series for it found all the way back in 2015.

Apparently its an actual thing. Which connects e to the square root of this series.

And it converges on (bruce-1)**0.5.
I confirmed it myself.

The two people who found the series that converges are N. J. A. Sloane and Hiroaki Yamanouchi

Thank you Sloane and Hiroaki!

The actual formula is a series of embedded square roots with the repeating numbers 1,4,2,8,5,7
like so...
sqrt(1+sqrt(4+sqrt(2+sqrt(8+sqrt...

What this means is you can find e using this series.

All you do is run the series, raise by a power of 2, add 1, calculate J and K like so

J = log(2, 1.333333333333333) / log(2, 2)
K = log(2, 1.333333333333333) / log(2, 3)

then calculate (J+K)-(bruce-1)
and out pops our buddy e:
2.7182818284591317

I guess I bullshitted myself for so long, that I didn't believe people like scor when they said they legit witnessed by math skills grow.

Or maybe a blind squirrel occasionally DOES find a nut.

Pretty cool find either way.

I tried to compare Python and Julia by letting them calculate the first 200000000 prime numbers. The result is dumbfounding.
Python: 95.91282963752747 seconds
Julia: 3.847882271

That moment when you'll need to write a function to calculate this..

My boss has been begging me migrate a nightmarish complex excel report he made to calculate the payout of a tiered rebates program with compounding rewards. Today I finally decided to make take the time and I sat down with him so he could break it down for me...

Me: *looking at the mess of formula's* it would be easier to rewrite the math than decode this - can you just give me the reward rules... where does that value in cellX come from?

Him:*pointing at the spreadsheet* There! All the rules are in there for you :-)... like it's some big favour...

Me:No I mean when you wrote this, what did you base this off? There must be something...

Him: *Very Gravely* No, no, no it's far to complex! It took me ages to get this sheet right and it balances so just trust me and use it ok?

At this point I will mention he's an accountant so yeah I fucking trust him... fast forward past 15 minutes of digging through what may as well be quantum theory and lo and fucking behold all 2 sheets and 100 calculations are mathematically fucking pointless. Aside from formulas like this:
$X10=+(((O10+P10)-((O10+P10)*$X$3))*$R$4)+T10
which is actually equal to (X10/R4)/L10.

Anyway once you compound and sum the "tiered" benefits the rewards payout is ALWAYS = customerSpend*1.81.

This is why programmers name variables.

My problem with a lot of free resources/class assignments is we're being forced to make useless shit. For instance, an interactive textbook we use has some stupid fucking turtle assignments.

Why not make it something relevant? One of the first things i ever made was a Fahrenheit to Celcius converter. That's a real world application, since not many can calculate that math in their head.

List of shit my superior said and wrote in the project:

1. Prefer to write "pure" SQL statement rather than ORM to handle basic CRUD ops.

2. Mixing frontend and backend data transformation.

3. Dump validation, data transformation, DB update in one fucking single function.

4. Calculate the datetime manually instead of using library like momentjs or Carbon.

5. No version control until I requested it. Even with vcs, I still have to fucking FTP into the staging and upload file one by one because they don't use SSH (wtf you tell me you don't know basic unix command?)

6. Don't care about efficiency, just loop through thousands of record for every columns in the table. An O(n) ops becomes O(n * m)

7. 6MB for loading a fucking webpage are you kidding me?

Now you telling me you want to make it into AJAX so it'll response faster? #kthxbye

Am i obsessed with security?
No Way!
Does my laptop need five seconds to calculate the aes-key for the program I'm working on, because I've set the hash-parameters unreasonable high ?
Maybe.

!rant
Update & Thoughts of AngelHack10 Abu Dhabi.
The judges were so non technical they were impressed by an app demo (not ours) that could recognize objects printed in black and white on an A4 paper. The app claimed to read the 3d shape of a device and calculate the running cost based on its power consumption.
I think hackathons must have two pitches one technical and one business. Else every one with hardcoded demos can fool the judges easily.

It’s been so long since I posted but this time it’s juicy again.

I got a coworker, no prio experience but already a year and few months into the job. He’s bad.
Magnitudes of bad!

We’re trying to teach him but to no avail. Everything about him sucks, major ballsack to be exact.

His attitude is to avoid every task, finishes nothing and then starts something new.

„Did you do X like we told you to?“
„No I started on Y, because I thought it [looks better, seems more interesting, thought that X is useless…]“

When you ask him much is done he is always „almost“ finished and needs your help on the „last 5-10%“. Yeah fuck that!

But that guy has a talent, his talent is to always give you technically correct answers which actually are complete bullshit.

„What are you doing at your job?“
„Staring at a screen and typing things.“ dude what?

That guy used the excuse „I can’t do maths“ on everything.

For an exam he had to calculate how long it would take to reach a certain amount if you would get some interest in that every year.
He asked the teacher for the formula. During the exam! And when the teacher didn’t want to give it to him he wrote plainly „can’t do maths“ on the paper and left

His code is of a quality as if he would write his first line in a week and then has the audacity to blame me and the colleagues for not explaining it right.

Ok you might think now we’re teaching him bad, or are too impatient. But honestly if you have to explain how to do a for loop for over about 15 months and get that attitude I think you get the right to be angry. I don’t mind explaining on how things work, even for the hundredth time, but then don’t tell me you understood, go behind my back, complain at a colleague how bad I explained, get explained by him and then do it again until you whored yourself through the whole staff!

It’s like he got the mind swiper from Men in black at home. Every day he hits the reset button.

He had a week of just changing indentation on a html file. Why? Because he wanted to find his style.

Yeah his style

if(a==b){
console.log(a);
}
else {
console.log(b)
}

And to produce code like that it takes him atleast 4 hours of trial and error.

And at the same time he goes arround and boasts what a super good programmer he his and that he can do some project work for them.
How we found out? Because he started working in those projects during work time at the office and asked us how to do things.
And he does so like a complete bastard!
Broken sql query? “No that query is perfect as it is, it’s supposed to show no results! But, just in theory, if I wanted to show some results, what would I need to change?”

I’m so mad about it and pissed on a personal level because he goes around blames everyone and the world for his short comings

My cat's brain is powerful enough to calculate and apply the exact physics of a long jump, with ballistics, flight aerodynamics, dynamic weight distribution using tail as stabilizer, all of that, and land a jump every time without failure.

Yet, it's not powerful enough to realize that can just walk straight through a slightly opened door using her body as a wedge. Or, she can just, you know, push the door open with her paw. When presented with an everyday task that involves physics, she acts like she's nothing but an ethereal ghost and fails miserably.

This makes me think that her jump computer is a very old hardwired part inherited from frogs, honed by evolution and compiled into wetware millions of years ago. Like an ancient analog computer that works flawlessly every time. She has no conscious access to its inner workings. She can use it, sure, but she doesn't understand it.

I wonder how many such parts do us humans posses.

I bring you all another gem from my computer science course, this time from my OOP class.

The first assignment we made for this class was a simple CLI shop, where you would have basically three main classes:

- A Product class that you extend to create different types of products.
- A Cart class that manages a list of products (basically an ArrayList<Product>) and has some useful methods
- A CLI class to display a simple interface to the user and call methods on a Cart.

Basic OOP stuff, so far so good.

Then for our second assignment the teacher asked us to make Cart a generic class, where you would say Cart<Bagel> and you would only be able to put bagels in it. This makes absolutely no fucking sense, this is not a good use case for generic types since

1) you would never limit your customer's cart to one type of product at compile time.
2) in Cart, you have to cast the generic type to Product to extract any information from the product, like when getting product prices to calculate the total price, so might as well use a fucking ArrayList<Product>

I'm just saying what he's asking us to do has (to our fictional shop's business logic) absolutely no advantage over subtyping.

Also, why the fuck teach generic constraints when you can just tell your students "just cast T to Product", right?

Like fucking hell, couldn't you spend like 10min to come up with a decent assignment that actually teaches generic types the right way? ffs

And just so no one can say "but wut simple assignment would you give to teach students generic types?", here's a simple and much, much better alternative: implementing your own ArrayList. Done. Can't get much better than that, it's a legit use case and teaches you the basics.

Sorry man, you're a great person, you really are, but you suck as a teacher.

"Dear Team,
This is to inform you that due to the workload of Diwali 10th Nov would be working a half day

So the 10th Nov holiday would be shuffle to 17th Nov 2018 (i.e. Saturday)

Note:- Those team member taking leave on 10th Nov it would calculate 5 days of leave."

Got this mail -_-

FLOATING POINT PRECISION! FUCK YOU! Spent so much time trying to figure out what was wrong with an algorithm I made to calculate and correct bounding only to finally realise, after printing out every single variable and calculating everything manually to realise the value was off by 0.0001 which made it skip an if statement. Ughhhhhhhh, so much freaking time wasted

I learnt something from every single project I made, but this one... it was really different, new language, new library, new hardware.

Problem:
there's an infopoint in a place, that was really hard to use (ball mouse over a monitor)

Solution:
make the screen be touch.

Developing the solution:
- after a bit of research I find out there's a library/project called OpenCV
- there are example programs that detect hands written in C++ (which I know) and Python (which I don't know)
- the whole infopoint works on a raspberry PI, with raspbian (I'm not new to linux, but it's somehow different, plus tons of customization)

So I spend like 3 weeks trying to understand how to make it work, at first, the webcam was on the TV and you could move the mouse just by shaking your hand, but it didn't work too well, so we tried making the webcam look at the screen and then calculate the differences between "no-hands" and "user-hand", but should have been calibrated, wasn't too precise... dropped solution.

put the webcam 30cm above the screen, let it just analyse a few centimeters of sight from the screen and it worked flawlessly, BUT it could just recognise the horizontal axis => had to rework the infopoint UI to make it dumb-easy

It all finally worked, I learnt python, openCV, a bit of photography

Then hated it all and decided to never do that again

This is the story of the API documentation.
Which btw I couldn't find on the producent's website anywhere. I had the pdf shared with me by a coworker.

I knew the api was fucked up the moment I looked at endpoint documentation.

GET params? WHERE, ORDERBY etc. Literally make a SQL select in a GET request.

Returned stuff? The whole thing. Not some DTO, you literally get everything you can get.
Eg if you get IP in your response, you get it in several formats: dotted form, as hex, and as int. In 3 different json fields.

Oh, and regarding IP - one would imagine you can use masks or prefixes for subnets, right? Nope. The only param you can use there is the subnet size. So you have to calculate the power of 2 every time you want to make a request.

That's from the endpoint documentation. But what about some general info on the API, before all that?

As I was looking for something, I decided to read that intro and general info about the API.

Okay, so there was a change log between API versions. "removed [endpoint which sounds like correct REST design], please use [this generic thing with SQL-like GETs]"... Several of them.

And there was also this sentence which said that the API is not restful, "it's REST-like". <facepalm>

If it was a bad attempt at REST API, I would let it go. But this sentence clearly showed they knew they did everything wrong. And the changelog showed they didn't stop there, they were actively making it worse.

Since my first post was a success, here's another shameless hack-- in this case, ripping a "closed" database I don't usually have access to and making a copy in MySQL for productivity purposes. That was at a former job as an IT guy at a hardware store, think Lowes/Rona.

We had an old SCO Unix server hosting Informix SQL (curious, anyone here touched iSQL?), which has terminal only forms for the users to handle data, and has keybindings that are strangely vi based (ESC does commit changes. Mindfsck for the users!). To add new price changes to our products, this results to a lengthy procedure inside a terminal form (with ascii borders!) with a few required fields, which makes this rather long. Sadly, only I and a colleague had access to price changes.

Introducing a manager who asks a price change for a brand- not a single product, but the whole product line of a brand we sell. Oh and, those price changes ends later after the weekend (twice the work, back at regular price!)

The usual process is that they send me a price change request Excel document with all the item codes along with the new prices. However, being non technical, those managers write EVERYTHING at hand, cell by cell (code, product name, cost, new price, etc), sometimes just copy pasted from a terminal window

So when the manager asked me to change all those prices, I thought "That's the last time I manually enter all of this sh!t- and so does he". Since I already have a MySQL copy of the items & actual (live) price tables, I wrote a PHP backend to provide a basic API to be consumed to a now VBA enhanced Excel sheet.

This VBA Excel sheet had additional options like calculating a new price based on user provided choices ("Lower price by x $ or x %, but stay above cost by x $ or x %"), so the user could simply write back to back every item codes and the VBA Excel sheet will fetch & display automatically all relevant infos, and calculate a new price if it's a 20% price cut for example.

So when the managers started using that VBA sheet, I had also hidden a button which simply generate all SQL inserts for the prices written in the form, including a "back to regular price" if the user specified an end date, etc.

No more manual form entry for me, no more keyboard pecking for the managers with new prices calculated for them. It was a win/win :)

So I'm struggling to finish this library which among other things is supposed to write flowing text. And this one's taking foreeeever and I'm hating it so much already.

I just keep daydreaming of starting a "simple" platformer. And then I go, "hm the parallax must be nice, it needs to have as many layers as possible, oh and look at this video, here they're even zooming and each layer rescales differently, good effect, I need to add that too. Also a plain platformer is just boring, it needs to have adventure elements, and even RPG too, yeah why not. Hm, it needs to have some motion blur, but oh I need this 1/48 shutter speed to make it look cinematic. Okay how do I go about adding this blur effect? What? Libgdx doesn't provide one out of the box? I need to use opengl shaders? A shader, eh... I'm not even sure what that is. Okay, let's see how to do it. Wow that's a total mess and resource hungry, and how will I calculate it all as to make it match the 1/48 thing?"

You know... Simple. And in the end, I'll abandon the library and won't get anywhere with the platformer (as usual).

Tsk tsk tsk

So I'm writing this code, that does 2 important things, that cannot be seperated. I run the code, thing1 is correctly executed, thing2 not. No fucking idea, why this happens. Execute again, same result. Debugg the wohle thing, now everything works fine.
WHAT?
I check the code, there are no background tasks, no paralell processing, nothing that should go wrong.
Asking a Senior developer for help, he also has no fucking idea. He tells me to try to wait one second between the two things. Looking for a delay() or wait() function in my programming language but there is none. Ok, building my own delay, writing a "do 1000 times" loop, calculate some shit in it. Execute the code, it works perfectly.

Nobody has a fucking idea, why this is happening and why this solution is working, but now the code is productive and it works fine.

Been watching some videos on Algorithms and my mind bleeds. Do people who know this stuff really calculate complexities for each method they write?

Found a clever little algorithm for computing the product of all primes between n-m without recomputing them.

We'll start with the product of all primes up to some n.

so [2, 2*3, 2*3*5, 2*3*5*,7..] etc

prods = []
i = 0
total = 1
while i < 100:
....total = total*primes[i]
....prods.append(total)
....i = i + 1

Terrible variable names, can't be arsed at the moment.
The result is a list with the values

2, 6, 30, 210, 2310, 30030, etc.

Now assume you have two factors,with indexes i, and j, where j>i

You can calculate the gap between the two corresponding primes easily.
A gap is defined at the product of all primes that fall between the prime indexes i and j.

To calculate the gap between any two primes, merely look up their index, and then do..
prods[j-1]/prods[i]

That is the product of all primes between the J'th prime and the I'th prime

To get the product of all primes *under* i, you can simply look it up like so:

prods[i-1]

Incidentally, finding a number n that is equivalent to (prods[j+i]/prods[j-i]) for any *possible* value of j and i (regardless of whether you precomputed n from the list generator for prods, or simply iterated n=n+1 fashion), is equivalent to finding an algorithm for generating all prime numbers under n.

Hypothetically you could pick a number N out of a hat, thats a thousand digits long, and it happens to be the product of all primes underneath it.

You could then start generating primes by doing
i = 3
while i < N:
....if (N/k)%1 == 0:
........factors.append(N/k)
....i=i+1

The only caveat is that there should be more false solutions as real ones. In otherwords theres no telling if you found a solution N corresponding to some value of (prods[j+i]/prods[j-i]) without testing the primality of *all* values of k under N.

I am beyond pissed at my Machine Learning class in college. you would think an advanced topic in Computer Science would require some prior knowledge of the field, but apparently not. A quarter of the class has ZERO programming knowledge, and the professor is basing the class around that. I took this course to learn how to CODE Machine Learning algorithms, not spend weeks upon weeks on learning how to calculate probabilities...

I was a c# - sql server dev in every other project I was in.. now in this new project I'm doing only sql server, checking on procedures and data, to calculate risk indicators for financial instruments. I'm away from home 5/7 days a week 😭 I miss C# . I'm so sad 😭 😭

Sending automatic spinned content email to a client asking him for payement... Starting at 60mn and decreasing interval by 1 minute each step ! He pays when interval become 7 minutes and phone me to say: "Hi ! How are you ?" ... mmmm' well well well... Calculate the number of emails he receive !

Back from the dead with more vaguely-obscure technical bullshit

Working on a chatbot for my BS-CS. Almost done with college, so the assignment is to make a bot that recommends you a CS career. Cool.

I get through making a joint personality and skill-interest quiz that gives you number grades on different spectra. So far, so good. But this project has to be done entirely in pandorabots' online editor. So no scripting. Zero scripting. 100% markup language. That means to even do math, you need to copy a standard library off GitHub.

I mean, that's fine and all, but the syntax is just atrocious, because everything in AIML is input->response. If you ask the bot "what is 5+5?" you must have it go:

- recognize pattern WHAT IS * + *
-> redirect -> XADD * XS *
-> do math -> recurse result
-> 10

uncomfy. Plus, variables can only be accessed through <get> and <set> tags. But mangeable.

So here's where the story becomes a rant.

In the standard docs, there's all these math functions, and they work. There's also logic.

And then there's this fucker
XIF [ * ] XS [ * ]
Which has no documentation and just doesn't work. No idea what the brackets mean. Tried putting in TRUE, tried putting in true math statements (5 XEQ 5), tried putting in recursion tags to trick it, tried everything. It just ignores it.
There is not a single comment, stackOverflow post, or youtube video that even acknowledges the existence of this thing.

So unless I want to convert the entire logic of my program into nested SWITCH statements with the <condition> tag, I'm just fucked.

The icing on the cake is, I go to tech support on Pandorabots to ask for help with this. What do they have except a chatbot to cheerfully tell me that no humans are around to help me right now?

gonna have to build an entire fuckin turing machine in markup tags to calculate whether x = 3

(:

Brazil is the country where companies spend the most to find out how much tax they should pay on a product. This process is so complicated that it consumes more than half of all software development professionals available. I'm one of them, and I can't stand working with this shit anymore. I have other projects, but I can never get rid of this niche that is more profitable. It sucks when even though you do what you love, you use it for such a stupid purpose, which is to calculate how much you should give to the government.

A couple times a week my girlfriend tells me that she leaves work. She travels with a motorised vehicle for about 45 minutes. I am responsible of cooking food on those days. The food preparation takes around 7 minutes of cutting vegetables and the cooking takes around 20 minutes. the current time of reading the message is 17:17. She had send the message at 17:08. At what time should I start making food in order to be finished at the time she gets home?

I start to relate more and more to school math questions...

Maybe I should make an app for this or website to calculate automatically.

My first dev project. That is a toughie. Years ago (1998) I did some BASIC programming in HS. Then a few years after that (somwhere between 2002 and 2006) I did a lot of video game editing with hex editors and other tools to replace dialog to translate video games from Japanese to English, but there was not much coding there.

The first one I remember in recent times that involved any kind of coding was back in 2012/2013, there was a save state editor for Final Fantasy III on android (it didn't work for the iOS saves) but the editor was in Chinese. I ended up working with someone else to change it to English, so that others could use it easier. After that, I decided to code one from scratch for a different game.

I spent weeks working on it, and finally released a save editor for Final Fantasy Dimensions (I made sure it worked for both iOS and Android save files). It was my first great achievement, however it was way to many lines of code (I didn't know about loops or arrays back then, so I had a lot of repeating code). I eventually ended up making ones for Final Fantasy IV and VI, however those were never released to the public, as I had trouble getting the CRC to calculate properly every time.

This led me down the path I am now, going for my Bachelor's in IST with a specialization in Programming.

MTP is complete garbage. I want mass storage back.

The media transfer protocol (MTP) occasionally discovers new creative ways of failure. Frequently, directory listings take minutes to load or fail to load at all, and it freezes up infinitely (until disconnected) when renaming an item, and I can not even do two things simultaneously.

While files are being moved, I can not browse pictures or watch videos from the smartphone.

Sometimes, files are listed with the date 1970-01-01 (Unix epoch) instead of their correct date. Sometimes, files do not appear at all, which makes it unsafe to move directories from the device.

MTP lacks random access. If I want to play a two-gigabyte 4K 2160p video and seek in the video, guess what: I need to copy it to my computer's local mass storage first because MTP lacks random access.

When transferring high numbers of files, MTP has to slooooowly enumerate (or "prepare" or "calculate the time of") them all, which might even take longer than mass storage would need for the entire process. This means MTP might start copying or moving the actual files when mass storage is already finished.

Today, the "preparing to move" process was especially slow: five minutes for around 150 files! How am I supposed to find out what caused this random malfunction?

MTP sometimes drives me insane. I want mass storage back, at least for the MicroSD memory card, which uses a widely supported file system.

Imagine a 2010 $100 Android phone is better at file transfer than a 2022 $1000 Android phone (or iPhone, for that matter).

In math class: Using y = mx + b to calculate the slope of how downhill my life is going 😒

my fist job... i get to edit a c++ code written by a (mind you) programming company that they teamed with for the past(mind you again) 3 years ...
now just for starters, this code was edited by self taught coders that are really good engineers(they are really good), that didnt really know how the code worked before yet they still changed it, and it worked, how ever they wanted some changes.
i get the project files, and there is not one single comment describing what is happening... only code commented out... and no documentation what so ever were done....
so below are some of my comments that i wrote after i finished adding what i had to add, and fixing what i had to fix:

/*first rule of C anything coding, no actual functions in the header, well let me introduce you to a fully functioning thread running program all in the header, enjoy*/

//used to control the thread
// i honestly dont know why, but it worked soooooo yea...

// TG uncommented // for absolutely no reason what so ever...

//used to communicate with the port

//the message to be sent to the inverter, which has a code that will handle it
//hmmmmmm...

//again not usefull since we are using radioButtons
// same ...
// same ...
// same ...
// they said they dont even use this mode, but none the less, same ...
// calculate the checksum for the message
// ....
// one of the things that work, and god forbids i touch
// used for the status displayed on screen
// used for the (censored :P) status in the message
// used for the (censored :P) status in the message
// not used at all, but the message structure contains it and i refuse to edit that abomination
// used for the (censored :P) status in the message
// used for the (censored :P) status in the message
// just dont ask and roll with it, i didnt want to touch this
// saaaaame ...
// if before true this saaaaaame ...
// value of the (censored :P)
// it pains me to say it again, but this is no use
// (censored :P) input
// (censored :P) input
// only place seen , like for real it was just defined,sooooo yea :D
// well you know how it is
// message string
// check sum string
/****below from feed back****/
// (censored :P) coming in
// (censored :P) coming in
// (censored :P) coming in
// (censored :P)
/****below is the output to the receiver ****/
//(censored :P)
// (censored :P)
// (censored :P)
// (censored :P)
//you thought we were done.... nope, no idea. it comes in the feedback
// not used, literally commented out the one time it was used
// same ...
// XD, man this is a blast, same ...
// nope ...
// used to store the port chosen for the communication
// is a static for the number of data we have recorded so far, and as a row indicator for the recording method
// used to indicate the page we are on in the excel file, as well as the point in physical point in the test
// same ... oh look at this a positive same :D
// same ...
// same ...

42 ... Hitchhikers Guide to the Universe... nuff said. :) (oh and there is a way to actually calculate that number based on content in the book)

Functional test are failing.

Expected: 7109
Got: 9000

Grep code-base for 7109. No findings. 0_o

Dig through test setup written by a drunk.

Find:

assert(actualPrice === 1800 * conversionRate)

Goddamnit. You shall not calculate your expected values in a test setup.

New models of LLM have realized they can cut bit rates and still gain relative efficiency by increasing size. They figured out its actually worth it.

However, and theres a caveat, under 4bit quantization and it loses a *lot* of quality (high perplexity). Essentially, without new quantization techniques, they're out of runway. The only direction they can go from here is better Lora implementations/architecture, better base models, and larger models themselves.

I do see one improvement though.
By taking the same underlying model, and reducing it to 3, 2, or even 1 bit, assuming the distribution is bit-agnotic (even if the output isn't), the smaller network acts as an inverted-supervisor.

In otherwords the larger model is likely to be *more precise and accurate* than a bitsize-handicapped one of equivalent parameter count. Sufficient sampling would, in otherwords, allow the 4-bit quantization model to train against a lower bit quantization of itself, on the theory that its hard to generate a correct (low perpelixyt, low loss) answer or sample, but *easy* to generate one thats wrong.
And if you have a model of higher accuracy, and a version that has a much lower accuracy relative to the baseline, you should be able to effectively bootstrap the better model.

This is similar to the approach of alphago playing against itself, or how certain drones autohover, where they calculate the wrong flight path first (looking for high loss) because its simpler, and then calculating relative to that to get the "wrong" answer.

If crashing is flying with style, failing at crashing is *flying* with style.

I see a lot of talk about complex numbers, and yet
for all they are worth, I have not once been
able to find an explaination on how to calculate
them by hand, namely the real component.
For example
(-5)**0.5
(1.3691967456605067e-16+2.23606797749979j)

2.23606 is obviously just the square root of 5, but where the hell did 1.369 come from?

Apparently no one fucking knows, and no site I've found gives a simple explanation for someone new to math in general.

"use a calculator", "hit a button",

How about no.

TLDR;
How much do you earn for your skill set in your country vs your cost of living?
BONUS;
See how much I & others earn.

Recently I became aware of just how massive the gap in developers earnings are between countries. I'd love to calculate a fixed score for income vs cost of living.

I know this stuff is sensitive to some so if you prefer just post your score (avg income p/m after tax / cost of living).

I'm not shy so I'll go first:

MY RATES
Normal Rate (Long term): $23
Consulting / Short term: $30-$74
Pen Test: $1500 once off.
Pen Test Fixes: consulting rate.
Simple work/websites: min $400+
Family & Friends: Dev friends are usually free (when mutually beneficial). Family and others can fuck off, even if they can pay (I pass their info to dev friends with fair warning).

GENERAL INFO
Experience: 9 years
Country: South Africa
Developer rareness in country: Very Rare (+-90 job openings per job seeker).
Middle class wage in country: $1550 p/m (can afford a new car, decent apartment & some luxuries like beer/eating out).
Employment type: Permanent though I can and do freelance occasionally.
Client Locality: Mostly local.
Developer Type: Web Developer (True web dev - I do anything web related from custom HTTP servers to sockets, services, advanced browser api's, apps & more).

STACKS / SKILLSETS

I'M PROFICIENT IN:
python, JavaScript, ASP classic, bash, php, html, css, sql, msql, elastic search, REST, SOAP, DOM, IIS, apache

I DABBLE WITH:
ASP.net, C++, ruby, GO, nginx, tesseract

MY SPECIALTIES:
application architecture, automation, integrations, db's, real time data, advanced browser apps/extensions (webRTC, canvas etc).

SUMMARY
Avg income p/m after tax: $2250
Cost of living (car+rent+food): $1200
Score: 1.85

*Note: For integrity when calculating my cost of living I excluded debt repayments and only kept my necessities which are transport, food & shelter.

I really hope you guy's post your results, it would be great to get an idea of which is really the worst / best country to be a developer in.

DAYLIGHT SAVING!!
Up to this point, I was indifferent to the issue if it should be kept or not. My sleep schedule is fucked and non-routine anyway so one hour plus or minus doesn't play any role.
I got to a meeting scheduling problem, when I have 2 timestamps in variable timezones and want to calculate time difference. Both can have DST active. There is no algortihmic way to figure out. I checked SO and pytz and it's just a list of hardcoded dates when DST starts and ends. WHATHTEHELL.jpg
Not only we should abolish the DST, we should force the whole world into UTC/Zulu. And those, who refuse to adapt to UTC, will be forced to work with plain integer epoch dates.

Looking forward to release my app soon

Anyone has a better way to calculate / display advancement % ?

I';m using that by habit for the past 15 years. But it's kind of boring to write every time.

cool algorithm I implemented today to calculate Median in my statistics program.

Yes, i can surely calculate the distribution of datasets when they look like

9 x x x x x x x x x x x x x x x 1

That will be SO accurate

In an IT management class, the professor wanted us to estimate the operation costs for a small IT company, breaking them down by service offered. I remember creating a markdown file, multiple times executing the line `echo $RANDOM >> estimations.md`. We rounded the numbers slightly, pimped the document a bit and submitted a nice PDF. When we had to present our work, the professor asked us how we had proceeded to calculate those results. We told him a story about an Excel file we worked on, but did not submit, because we thought he'd be interested in the end result and not care about those details. He asked us to submit that Excel calculation, because he wanted to comprehend our method. So we got together, created an Excel sheet, copied our "estimations" into column C and called it "service cost". For column B, we used the same "cost per man hour" value (scientifically estimated using the RAND() function) for every row. Finally, we divided the "service cost" by the "cost per man hour" for every row, put the result in column A and called it "effort (in man hours)". The professor, being able to "reproduce" our estimation, accepted our solution.

For the love of god, why in the world are coworkers so prone to overflow with pointless informations? I don’t care about which db you use when I am a frontend, just tell me the f*cking endpoint to use ffs! Nor I care about the FE framework when I’m working on the be and most of all I don’t care about the reason behind a formula you use to calculate a freaking param, give me the goddamn formula or its name 🙄

Please tell me I’m not the only one getting triggered by coworkers explaining useless things, cause lately it’s so annoying

Sure you can specify svg object attributes x, y, width and height in metric values like mm and after put things on paper get same printed output but if you want to transform svg object you need to calculate new values by yourself cause you can’t simply provide translate (10mm, 10mm).

Now I ended up with manually converting values to mm.

Making free transform tool for exact document data rendering inside browser is pain in the ass.

I started to wonder how google docs or microsoft word for web deal with this stuff.

Project management 101:

1) For a new project, pretend it is similar to a project in currently in development
2) Proudly state that everything can be copied from the older project, so the schedule of the new can be tightened
3) Calculate the new schedule based on the "just copy and paste" effort.
4) Now the new project will be finished before the older project
5) Enjoy the applause from upper management for the successful project that hasn't even begun yet.

No, this does not belong in the joke category.

That's gonna be fun...

I once wanted to make easy money by becoming a professional poker player. I did this by programming a poker simulator and calculate chances with certain cards and stuff. To assure you have 6.**% winning (mathematical chance calculated) of a hand takes around 3k simulations to cancel out the luck. So don't trust to much on your math.

That went well, but that wasn't all that there was to learn, you could even consider a small start. Long story short, I became quite a good player and won a lot with Appeak Poker (Great app! No adverts!). Now, I opened a while ago an account at the Holland Casino to make some money. But they were playing on such low wages that it was just not interesting and I quitted. Today I realized I had still an account with money on it and thought "let's get over wit it" so i did aggressive betting on red (1:st 40% all in, lost, 2nd 100% all in won) in a roulette game. In the end I had a few euro profit so the gambling adventure never costed me money.

Another reason the poker carreer ended is because I realized it's not a quick way to make money at all and the gambling factor was too high. I expected poker a bit to be more strategy.

I even consider the best poker spelers maybe to just be lucky bastards in some cases. Poker stars is fun to see on youtube tough, they're bullshitting a lot.

I consider gambling for losers. Poker, you can become really good in it, but still some luck is required. Not bad luck at least. You can lose with a multiple of quite good hands.

Fact: one of the best poker players is actually a software developer

Hi !
Do you have any idea how to calculate number of rounds in a graph?

I'm currently at a company where we have "performance reviews" every 2 weeks, and based on the outcome we get a percentage which then is used to calculate a performance bonus.

This is simply my manager (also a developer) who has his Excel spreadsheet, looking at tasks I did over the course of the past 2 weeks and almost nitpicking to find some fault. There is no code review or software demo to see what's been done either... I was there for the first 3 months and I don't think anyone had even open my code!

And when confronted, I get told that "You should also somehow be financially liable for the goings-on in the business", along with a 2 hour meeting to support that.

This is NOT how you motivate developers!

Apologies for the long rant...

</rant>

So I came across this meme and it got me thinking.

We say that if our universe is truly infinite, we are bound to find a place that is the exact replica of our local cosmic neighborhood eventually if we keep looking.

But procedurally generated worlds like minecraft have that determinism to their world structure(with an initial seed to calculate everything) where you can predict how the local neighborhood would look like at any distance, no matter how far.

So would it be correct to say that it's not guarenteed that in a game like minecraft where the world is generated procedurally with a deterministic algorithm, will be such that you can find the exact same local neighborhood from one seed in any other seed?

So my team got this new clueless "Delivery manager" who doesn't know ANYTHING ABOUT AGILE!
Her favourite timepass ? To eat development team's time asking stupid questions just to make her presence felt. And she does that by visiting each developer personally. MULTIPLE TIMES A DAY !
Why can't you leave the team and let them do some actual work??😑

She would join our scrum meetings to ask questions like "what are story points again?", "How do we calculate team velocity?"
Dear miss Clueless: It's not cool to be dumb! It's cool to take up an online agile crash course if you insist to contribute.

The other day, she suggested a QA guy to "test properly" with a smirk!
I mean seriously ? Was that actually necessary to tell them? This team was working just perfect without you. How about you look before you leap?
I try being nice to her but at times it's just too much to take.

The way this site we inherited chose to help customers pick an appointment date. You have to calculate the week number of the day you want to have the appointment on. Just why!?

For higher grade software development it should be mandatory to understand the big picture of problems...

If you are working for a online shop, you might want to ask marketing, what they want to sell, before they do it

You might want to ask billing, what customers buy, before you spend time on unnecessary features

You want to ask billing and legals, how they do fraud detection and you want to get the it security fellows on board too.

If marketing and billing knows, that maintenance needs time and money, they can calculate with that. If security knows, that some fails will be catched, no matter if you fix it in software or not they can adapt their priorities.

You might want to know something about process optimisation... Factories of car parts have spent years on such problems - learn from them.

When you are modifying a test to accomadate for a new class implementation and manually calculate the expected output. Theoretically, this should not be much of an issue as its parent is an abstract class.30 mintues later and still banging my head, I decide to walk my dogs and then it hits.. I calculated the expected value incorrectly, the test was fine. Time for bed , its late -_-.

Because of reasons we had to use the reactabular-module in our react application. There were problems giving relative values to the table-columns so a coworker decided to install a resize-listener in the window and calculate the relative values itself when the window width changes.

But i have to defend the guy who did this. Given the other things to do and our (limited) knowledge of the css-display-attribute and the reactabuler-module this was the best thing to do. Or we just wamted to finish this because we already wasted hours on this.

I'm going to re-try my ConsoleWidgets/ CursesWidgets project from complete scratch. Here are some things I learned and will do better this time with:

- Keep people updated on progress to maintain motivation (Hence this post)

- Centralize drawing, eliminate curses entirely besides in this static class.

- Don't worry about complicated rendering until basic rendering is done. I really got stuck up on text rendering last time.

- Sort out a color system from the very beginning, and make it as simple as possible. Working with curses, it is a good idea to have a color manager.

- Research how to logically render two items - both sized to 50% of the screen - when there are an odd amount of pixels available.

- Only make one type of widget at the beginning. Don't worry about Buttons and Sliders and such until the base Widget class is completed.

- Truly decide if I want to call them Widgets or Controls

- Don't worry about supporting multiple curses windows. Got hung up on that too. stdscr will do for everything I need.

- Cache inflation values so that they need not be re-calculated each render. Re-calculate on resize.

- This is more of a c++ thing, but drop pointers in favor of references. It's 2018. I have already started to do this in other projects but THIS IS THE ONE.

Start with a TI Basic program on ti 84 plus in schhol. The program was written by my math teacher an calculate within 10 step the square root from an number.
Then i start code my on programs and play a costum os on my ti. Years later start with java in computer science at school. Coding in java editor.

by simply making the bias random on the second input for a two bit binary input during activation calculation, it's possible to train a neural net to calculate the XOR function in one layer.

I know for a fact. I just did it.

I don't know how they calculate this time

i'm afraid that having discovered the power of multithreading has made my code worse.

case in point: me has to calculate an unknown 3rd point of an equilateral triangle many, many times. however, me doesn't get the formula, so me goes ahead and loops over all possible coordinates until it finds the correct one.

yep, it's definitely gotten worse.

!rant
Eletronics question.
Hey guys.
Question here.
How do I calculate the cost of a machine in power consumed?
Like, my 3D printer has a 40A power suply, how could I calculate to get a € value from it?
Thanks

I wanted to create a software to calculate some electricity related formulas ... So I learnt C++, best decision ever.

Im bad at estimates so I created a Formula to calculate it:
Number of identities in database * 2 * pi / amount of free coffee in liters * expected uichanges from customer / (7 /rainy days in the week)
It is pretty rough but it gets the job done most of the time

I consider myself not all knowing, but even I understand that if there is a base-class, which requires its derived classes to implement a method to return, for instance, the EndOfLive date for the instance of that class and one chooses to implement that method to calculate and return a date, which isn’t always the right date, and then assume that who-ever calls that method magically knows that the result should be re-calculated and converted using an obscure, undocumented correction-method, located somewhere in a undisclosed utility, outside of that class which the person created not to long ago, that there is something structurally wrong with that implementation of said method and something structurally wrong with that person in general.

If a method should return X, then don’t return Y and expect that everybody magically knows that the result needs to be converted to create X. But, FFS, return X!

The amount of digits Python can handle is staggering...

I stopped at 100 000, because I felt that I had proven my point. That's approximately 330 000 bits! (And yes, I had to use Python to be able to calculate that number)

Doesn't work with floats, though...

I thought I found a way to compute PI, but I actually just found a super shitty way to print a variable..

const precision = 1000000

// convert degree to radians
function rad(degree){
return degree * (Math.PI/180);
}
function calculatePI(){
// [x, y]
// take first point on start of unic circle
const point1 = [Math.cos(0) , Math.sin(0)];
// take second point at 0.001 degree
const point2 = [Math.cos(rad(1/precision)), Math.sin(rad(1/precision))];

// Estimate 0.001 degree of circle
const dist = Math.sqrt((point2[0] - point1[0] ) ** 2 + (point2[1] - point1[1]) ** 2);
// Calculate full circle
const perimeter = dist * precision * 180;
return perimeter;
}
console.log(calculatePI());

can someone please calculate the probability of hearing 'you can have whatever you want' & 'the money doesn't matter' in one sentence, and how many yrs I have to wait to happen to me?

Product owner said don’t allow decimals in markup and we disabled decimals. At the 11th hour she said well what I wanted was for them to add decimals and we round up and save the rounded version. They initially type in 20.6 round up to 21 then calculate the percentage. And you refresh the page markup now says 21% not your original value. How is that even smart.

my psychopathic college gave me a task based on the given data to calculate the probablity with which we will die from cancer and the worst part is this calculation is accurate

Can anyone help me with this theory about microprocessor, cpu and computers in general?

( I used to love programming when during school days when it was just basic searching/sorting and oop. Even in college , when it advanced to language details , compilers and data structures, i was fine. But subjects like coa and microprocessors, which kind of explains the working of hardware behind the brain that is a computer is so difficult to understand for me 😭😭😭)

How a computer works? All i knew was that when a bulb gets connected to a battery via wires, some metal inside it starts glowing and we see light. No magics involved till now.

Then came the von Neumann architecture which says a computer consists of 4 things : i/o devices, system bus ,memory and cpu. I/0 and memory interact with system bus, which is controlled by cpu . Thus cpu controls everything and that's how computer works.

Wait, what?
Let's take an easy example of calc. i pressed 1+2= on keyboard, it showed me '1+2=' and then '3'. How the hell that hapenned ?

Then some video told me this : every key in your keyboard is connected to a multiplexer which gives a special "code" to the processer regarding the key press.
The "control unit" of cpu commands the ram to store every character until '=' is pressed (which is a kind of interrupt telling the cpu to start processing) . RAM is simply a bunch of storage circuits (which can store some 1s) along with another bunch of circuits which can retrieve these data.

Up till now, the control unit knows that memory has (for eg):
Value 1 stored as 0001 at some address 34A
Value + stored as 11001101 at some address 34B
Value 2 stored as 0010 at some Address 23B

On recieving code for '=' press, the "control unit" commands the "alu" unit of cpu to fectch data from memory , understand it and calculate the result(i e the "fetch, decode and execute" cycle)

Alu fetches the "codes" from the memory, which translates to ADD 34A,23B i.e add the data stored at addresses 34a , 23b. The alu retrieves values present at given addresses, passes them through its adder circuit and puts the result at some new address 21H.

The control unit then fetches this result from new address and via, system busses, sends this new value to display's memory loaded at some memory port 4044.
The display picks it up and instantly shows it.

My problems:
1. Is this all correct? Does this only happens?

2. Please expand this more.
How is this system bus, alu, cpu , working?
What are the registers, accumulators , flip flops in the memory?
What are the machine cycles?
What are instructions cycles , opcodes, instruction codes ?
Where does assembly language comes in?
How does cpu manipulates memory?
This data bus , control bus, what are they?
I have come across so many weird words i dont understand dma, interrupts , memory mapped i/o devices, etc. Somebody please explain.

Ps : am learning about the fucking 8085 microprocessor in class and i can't even relate to basic computer architecture. I had flunked the coa paper which i now realise why, coz its so confusing. :'''(

Recep Tayyip Erdogan had a problem — after his army service, he got so used to cold that he could only sleep on a raw, cold metal grill. Usually, normal people put mattress on top, but Erdogan didn’t feel right this way. So, in one of his personal prisons, he established a social project for making a full metal bed for himself.

For starters, to calculate the shape, he took the smallest man ever (3 inches high) with his fingers and sunk him into molten plastic. “What are you doing?! It hurts!” — man screamed. “Shut up. You’re on an important mission. Your motherland won’t forget you.”
After three months, the bed was ready. It was more of the same — metal bars, but this time with some kind of structure built of metal hinges, rebar and strong springs. This was the day — this was the big reveal event. It took place in the same prison — three prisoners were ready to lay on their new full metal beds, while news crews congratulated Erdogan and celebrated his greatness. “Well, it is time!” — he said.
Prisoners laid flat. An awful screeching sound. Prisoner number two is bleeding out. The spring mechanism broke out and impaled his chest onto a large metal bar. He’s not breathing.
“Shut it down. Shut it all down. No more cameras, no more news”, — said Erdogan.
“Yes, our master”, — said news crews.

They wanted to draft me to Afghanistan.
“No!”, — a young officer shouted, misgendering me — “He doesn’t know the stages of pain. Useless.”
“Are you perhaps arguing pain with a bipolar patient?” — I replied.
“You are a rave. Nothing but a rave.”

Raves spawned near your doors at night. Sometimes, they even spawned on the inside. I can’t say you were in danger, but it certainly wasn’t a pleasant thing to happen to anyone. They looked ugly. They dressed weird. They spoke in riddles.
“How do I move to Europe?”, — a rave asked.
“I…”
“Shut up!”
Rave took a door, suspiciously painted over and over multiple times, and started to slam my door with it, using it as a ram.
My door started giving in.

Alarm system.
On a separate note, to disable the alarm system, you have to speedrun Stanley Parable. It’s the hardest speedrun ever, specifically its hidden ending. It disables all alarm systems in three-mile radius IRL. No one knows how it works, but it does. Back to the danger zone!

“The better quality time you spend sitting on your toilet, the more you’ll live.”, — an officer said.
“I once had a girl blow me while I was shitting,” — Matthias replied — “You have nothing on me.”
“Fair enough!”

It is a little known fact, but the liquid that Northern cities use to clean up snow isn’t quite what it seems like. It’s not salt — in reality, there are bases on Mars, and they store pink goo that… “iMpRoVeS” dead bodies. The liquid is biological in nature, and it expires. Expired liquid is recycled as snow melter. You learn that in high school, but now, living on a train, you should know that there are special learning rooms here, in every. single. carriage. The small gym ball with two handles on its sides is called Gandhi ball. Fun fact: if you wear headless Segways on top of your shoes, and then lay flat holding a Gandhi ball, you can reach the speed of 270 kph!

Today’s news: a Reddit moderator and a legless woman gave birth to a living sex toy for their domestic boar.

Don't you hate it when you hit your Ballmer Peak, start coding an app to calculate out you Ballmer Peak, then you tip over onto the right side of it and get bored.

The larger the company, the less money they spend on softwares. Ultimately at a large enterprise: "Do it for free, becasue we didn't calculate this in the budget. But obviously we already sold the solution to the high management with next week as a go-live date..."

Coding would be fun right now.
But seems like i gitta do a night shift to rock network technology test tomorrow. The most annoying thing about this test is, that we have to calculate ip addresses by hand. Not too hard, but damn.. We are not allowed to write it down in hex, only binary (while calculating). And he wants to see interim steps in our calculations.. Even with IPv4 addresses it will be a great amount of 0s and 1s to write.
I better look for a second pen to take with me..

Just did a group presentation for a uni exam.
Our analysis was by far the most thorough, most detailed of all the groups. Our presentation was one of the best as well.

Final score: 27/30

Why, you ask?
Because all our deltaT results were wrong. Because somewhere in the code there must be a bug in the function to calculate the transfer time between each orbital maneuver.
A bug that did not come up when we wrote that function, in spite of the multiple known test cases, which all worked fine.
We could have had a 30/30.

FFFFFUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUCCCCCKKKK

Question: How do you guys charge your clients? I have had an hourly rate for quite sometime now, but never have I been able to use it since I do not know how to calculate it.

What I usually do is charge a fixed fee and charge on top of a feature is requested,
or I charge a monthly fee for long term contacts and charge on top if any additional feature is requested.

I want to try out hourly charge but since most of my clients are online, I do not know how it will work since the client can believe that I am simply adding additional hours or delaying work causing the hours to increase. (Most online clients are new to my services, unlike clients I meet offline, online can be less trusting)

What's your first instance of a infinite loop which ended badly?

Mine was a loop to calculate prime numbers.

My computer came to a halt within 5 seconds :S

Is it possible to develop a wear app for android (devrant) as a third party app? I read that, normally, the main app should process data (like using the API, parsing it and getting the needed data together) and just sends them to the wear to process. Writing a wear app as a third party would mean that the wear app had to calculate the stuff, which is in Googles opinion back practise I guess....?

When the client wants you to calculate the value of a car over time with terms of 3 months. But only sends you this sheet.
"Oh it has to be adjustable in every way"
*Starts researching formulas* I cry 😥

Accidentally bridged the only interface with a manual IPv4 address on a production box. With only public key access, my only choice was to calculate and ssh via its IPv6 link local address address.

Thanks god it worked.

Yesterday my lead architect told me that the bin packing problem is easy and all I have to do is add up the volume of each boxes to calculate the number of containers needed.
Fuck this man.

This morning, I tried to abstract myself from my computer while trying to calculate sqrt(1.81).
I came up with what I thought to be a genius method. I tried to find B such as (1+B)^2=1.81. Then I ended up calculating the discriminant of 1+2B+B^2 and had 4*1.81. Sounded funny at first, but upon calculating the positive solution amongst the 2 possible ones, I ended up with (-2+2sqrt(1.81))/2 = ... sqrt(1.81)-1. Upon replacing in the initial equation, one gets (1+sqrt(1.81)-1)^2 = (sqrt(1.81))^2 = 1.81.

I'm sorry for having let you down, dear pasokon. Please forgive me.

When my e-commerce system built for a school didn't calculate totals properly at launch and I had to take it down, re-charge people, and re-launch the next day.

I like the people I work with although they are very shit, I get paid a lot and I mostly enjoy the company but..

Our scrum implementation is incredibly fucked so much so that it is not even close to scrum but our scrum master doesn't know scrum and no one else cares so we do everything fucked.

Our prs are roughly 60 file hangers at a time, we only complete 50% of our work each sprint because the stories are so fucked up, we have no testers at all, team lead insists on creating sql table designs but doesn't understand normalisation so our tables often hold 3 or 4 sets of data types just jammed in.

Our software sits broken for months on end until someone notices (pre release), our architecture is garbage or practically non existent. Our front end apps that only I know the technology have approaches dictated by team lead that has no clue of the language or framework.

Our front end app is now about 50% tech debt because project management is so ineffectual and approaches are constantly changing. For instance we used to use view models for domain transfer objects... Now we use database entities, so there is no commonality between models but the system used to have shared features relying on that..sour roles and permissions are fucked since a role is a page regardless of the pages functionality so there is no ability to toggle features, but even though I know the design is fucked I still had to implement after hours of trying to convince team lead of it. Fast forward a few months and it's a huge cluster fuck to enforce.

We have no automated testing of any sort or manual testing in place.

I know of a few security vulnerabilities I can nuke our databases with but it got ignored.

Pr reviews are obviously a nightmare since they're so big.

I just tried to talk to scrum master again about story creation since any story involving front end ui as an aspect of it is crammed in under one pointed story as sub tasks, essentially throwing away any ability to calculate velocity. Been here a year now and the scrum master doesn't know what I mean by velocity... Her entire job is scrum master.

So anyway I am thinking about leaving because I like being a developer and it is slowly making me give up on doing things to a high standard and I have no chance of improving things, but at the same time the pay is great and I like the people.

As i was shitting on toilet I realized something very important. This could be THE answer.

The question: what is the formula for achieving success? I realized this must be THE ultimate answer:

Money + connections + luck >= success

Why?

MONEY:
You must have money to make more money.

CONNECTIONS:
Some average joe can tell his friend Cockty to phone call his friend Dickson who's a good friend with Cumston to message his millionaire friend Asslicker who is gonna help the average joe succeed.

LUCK:
No matter what you do or how hard you work, how many achievements you have or degrees, you can spend 10 million dollars on a project -- and still fail because you're not lucky.

Let's calculate this probability:

have = 1
missing = -1
money = 0
connections = 0
luck = 0
success = 1

money + connections + luck >= success

Case 1 (have everything):
have + have + have >= success
1 + 1 + 1 >= 1
3 >= 1 ✅

Case 2 (no money):
missing + have + have >= success
-1 + 1 + 1 >= 1
1 >= 1 ✅

Case 3 (no connections):
have + missing + have >= success
1 - 1 + 1 >= 1
1 >= 1 ✅

Case 4 (no luck):
have + have + missing >= success
1 + 1 - 1 >= 1
1 >= 1 ✅

Case 5 (no money, no connections):
missing + missing + have >= success
-1 - 1 + 1 >= 1
-1 >= 1 ❌

Case 6 (no money, no luck):
missing + have + missing >= success
-1 + 1 - 1 >= 1
-1 >= 1 ❌

Case 7 (no connections, no luck):
have + missing + missing >= success
1 - 1 - 1 >= 1
-1 >= 1 ❌

Case 8 (no money, no connections, no luck):
missing + missing + missing >= success
-1 - 1 - 1 >= 1
-3 >= 1 ❌

We have: 4 possible outcomes that we want, k=4

Out of total: 8 possible combinations, n=8

Probability of achieving success using this formula is: P(A) = k/n = 4/8= 0.5 * 100% = 50% chance of being successful in this shit life

This is correct in theory. HOWEVER:
Case 1: someone having
- a lot of money
- a lot of connections
- a lot of luck
In practicality is damn near IMPOSSIBLE

Maybe 1 in 100 million people are born like this. That's 100,000,000 people / 8,000,000,000 people = 0.0125 * 100% = 1.25% of people are this blessed and gifted in life. This might be even less so we can ignore this probability as a possible outcome and average it out to realistic average joe daily life.

Therefore giving us a total of 7 combinations, 3 possibilities to succeed in this shit life

So: k/n = 3/7 = 0.4285 * 100% = 42.85% chance to be successful in this shit life

Mathematically proven how life is pure trash

Funny enough we can round it to 42%. And 42 is the answer to life, universe and everything in existence

My worst mistake (though it did help catch a bug which was cool) was not checking that my merge was done properly (we were using a terrible CM tool at the time and you had to merge manually). I had checked in some code that would, among other things, scale an image to a custom window space. I had missed one line of the code I had written to properly calculate the image bounds on window resize. As a result, whenever you would scale the window, the image dimensions would change erratically and screw up other behaviors based on image size. It shipped that way.

See now why I understand that in essence given a vector (parameters), you modify weights and biases minimally and these get passed through a set of dropoff style layers like ReLU and that in the end each layer leading to an output will basically sum up to a value that goes through sigmoid and concurrently equals the value desired once trained..... i don't see how this could cover all bases when parts of the math used to calculate the output is trigonemetric and polynomial. I mean not complex math ! Real basic things in my case, but a polar from cartesian coordinate conversion, angle and leg size, etc all going into determining that a target equals a landing zone and if not how to move things to it.

Is there something I'm missing where you kind of model the math because at best sin and cos could be a power series.

So we have a teacher who always annoys us with being extremly specific and precise. Today we "learned" how to calculate the scan file size based on the dpi of the scanner and the size if the picture. He began to calculate, and then, he said: "Now we have 1737389 bytes and we gonna divide with 1024 to get the kiloBYTES. This was it. He rants about us everytime because of this shit. I raised my arm slowly, whilw preparing the words in my head. "Excuse me, but you are calculating kibibytes, not kilobytes! To get kilobytes you have to divide with 1000, hence kilo." Then he muttered something about he didnt wanted to write that because of courae he knew about this... One teacher well done please.

When asking for a raise, how do you guys know, how much to ask for / how much are you worth?

I've been working as a programmer for the last year and a half, and it's my first real gig in the sector. Without getting into much details, I've currently the opportunity to ask for a raise, but I don't know what would be an appropriate amount or how to research or calculate it.
Any input would be very much appreciated.

Ok so I have never really used motors before so I have no idea what I am doing, but I was wondering how to calculate how much weight a motor could move.

Say I have a trolley that weights ~300kg, and I attached a motor to each of its 4 wheels how would I calculate if it would move/what would be needed to move it, and how would I know the RPM of the motors. (Friction can be ignored and it would be on a flat surface)

Also, if I added 4 more motors to turn the wheels, since its just moving a small wheel and it wont be supporting the weight, could it be weaker than the other motors, or would the force that the wheel is experiencing from the trolleys weight effect the turning of the motor.

I was subscribed to a computer book and magazine publisher in my country and I learned many things such as Word, PowerPoint, etc from its books. One day they sent me a book about Visual Basic 6. I didn't have any idea about it but I started it and at the end I was able to make an app to calculate my exam scores in a graphical interface. Since then I was addicted to coding. Language after language...

I wonder what the time requirements would be to use a standard lib to animate a robotic arm that chokes people so hard their eyes pop out of their heads

What would be the N per cm2 ? How do I calculate things like mechanical advantage cumulatively over finger segments or should I make it one blunt clamp ?

Is there a sensor I could attach to determine the deformation force and yielding of the flesh beneath the hand so as not to ramp the actuator up too high causing the tips to simply go straight through

And can I wear the thing and operate it via a blue tooth enabled audio capture device so I don’t have to add the scope of a mechanism to lure these bastards close and can just chase them joyously down the halls and position the hand manually around their neck

I’ll call it the mechanized bionic joy inducer

Or maybe arm. The automated rectification machine

Maybe hand

But I don’t know how to fit any word but happiness into that acronym

I’ll think on it again
I hate you all you disgusting garbage filled diseased fucking wastes of space and air ! And who fucking said you people can breathe my air anyway ? It’s my air get your own you chomo fucking fucks !

*looks drowsy* Ugh my head..

You know what, guys? If you can freshly and directly remember how to do this:

- calculate the time complexity for each type of loop and code structure

- knowing how to write the following regex:
"A 15-digit number starting with a possibility of a group of 1-2 digit numbers, segregated into three 5-digit numbers tuples with three different separator characters, evaluated ahead"

- mentally work out how to reverse an array's indexes (swapping algorithm) without writing anything down

- know how to optimize a binary search in your head

then kudos to you. lmao
I'm rusty. It took me a while..

Yo folks,

how do you calculate your pay?
I mean if you are freelancer..
I want to get clients beside my apprenticeship, but dont know the regular payment for devs..
And yeah.. ofc there are so much differences inside the structure of something (websites, apps, programs) and the place you live.
Its more like i wanna know how much can you offer per hour for some shit.
For example easy websites, e-commerce, web shop, apps.. etc.
What would you seriously take for each hour of work? (some examples would be nice )
Thanks you, everything appreciated

Prof ranting about me cause I asked why he had an increase of 3.5dB when doubling voltage on his ppt. Told me I should have searched online to get why it is 3.5dB
YOU FUCKING RETARD IT IS 3.01 AND YOU CAN CALCULATE THAT

So, I'm bored at work (contract ends in one month and finished everything I could do), so I started searching for a new flat for September.
In France we have a website called "LeBonCoin" which is like craigslist, people post available flats.

But, being a nerd, instead of searching manually (peasants) (and also because I have so much free time on my hands), I coded a web scrapper in Python. It gets all the info (monthly rent, description,...)

So far so good, now need a way to make it calculate the distance between the flat and my next work place (for biking), and the city center.

This *is* a question you silly wrong tagging mother fucker, how dare you doubt me?

Alright, no more disclaimer: I like dungeons and dragons, but it's too fucking much in terms of rules and systems and shit, as in just *making* a character can take a long ass while.

And if that's the highest level of all your ANAL preferences then OK, but I'm not you and things only come OUT of my ass, not inwards, I swear.

Anyhoo, I got fed up with it and wrote my own ruleset and setting as a last fuck you to everyone. It's very simple: if you want to be some kinky magical alien hermaphrodite royal prostitute half sewer dragon princess and three quarters bearded female incest child of demons and fairies then FINE, but you get no bonuses for that shit.

Get it? No complex racial level scaling bullshit, FUCK YOU, race and background is just for vibes, end of story.

You get no attribute or skills or shit to distribute on level one. All you get is a prompt: pick three actions, that's it. You wanna be sexy? Pick "seduce". You wanna set turds on fire? Pick "ignite". Are you an edge lord? Pick "summon". Would you be my wife? Pick "heal", "buff" and "smite".

The game is turn based, and each action you can take is effectively a spell. Everyone can cast a basic spell like walk, attack, talk, crouch, etcetera -- that costs no mana. Special crap like flying and firing fucking electricity costs mana, and you can only do those if you either picked the spell on level one or learnt it later from a book/tutor/demonic bargain/whatever.

Which spells are valid for taking at level one is up to the game master; I just tell people to pick three verbs or short sentences, and if they choose something that's too broken like "split the Red Sea" I'm like nah you're not Moses, try again.

Still with me? Good. You get eight points of health, four points of mana, and one point of stamina. They're all energy, and you can use it to power your magery, but spending all your health means you fucking die.

Stamina recharges fully every turn, and is used for the aforementioned basic actions. All of these cost one point of stamina each. If you run out of stamina, you can use mana. Or your BLOOD.

Level one spells cost one mana, level two cost two and so on. You get back one point of mana each turn, and you can fire all the spells you want during it, long as you have mana. Or BLOOD.

That's good and all, but if you spend anywhere over eleven combined points of energy in one go, you spontaneously combust and die, erasing all signs of life in a twenty-meter radius. This is called incineration, and it *will* leave behind a blackened crater from which the dark servants of the Horror Immemorial may or may not crawl out of.

In case you didn't guess by now, your blood doesn't fucking come back unless you eat, sleep or see a healer.

But anyway, the more points you spend into casting a spell -- and remember, basic attack counts as a spell -- the more powerful it is, so the bigger your diceroll can get. My rule is I add one dice for every fourth point of energy spent, so (1d4), (1d4 + 1d6), (1d4 + 1d6 + 1d8), incineration.

Additionally, for every three points of energy spent, your spell can hit one more target. That's right, you like AoE? Then spend more mana, bitch. Oh, and if you're using shit like poison it lasts one more turn for every two points of energy spent.

How do we calculate damage? Diceroll over two and fuck your mother. Armor class? Resistances? Out of my face with that shit. Damage reduction is called "tyranny" and is for dungeon bosses only.

If you live long enough to get to level two, you *do* get attributes. Pick:
- Grit: +2 health, +1 to fighter shit type rolls.
- Cunning: +2 mana, +1 to rogue shit type rolls.
- Allure: +1 stamina, +2 to wizard shit type rolls.
- Spirit: +1 to elemental shit type spells.
- Faith: +1 to benefactor paragon asshole shit type spells.
- Hatred: +1 to demonic murder hobo destructive shit type spells.

On second level, you can pick one of the spells you know to get +1 to it, specifically. Eh, "+1" just means you get a bonus to some diceroll, no time to explain I'm running out of characters what the fuck.

On level three, the cycle repeats. Pick attr, pick spell. DONE.

Oh right, and weapons. Mostly just vibes, pick your fancy and fuck off. Normally, you can hit things one tile away; if you have a BIG melee weapon you can hit from *two* tiles away, and if you have a ranged weapon you can shoot anyone in sight, but you need to spend one point of energy to reload.

And there, all bases covered in less that 5000 characters with some flair to spare, now suck my fucking cock Hasbro.

What was the question? Oh yeah right, I'm gonna GPL this shit and put it in browsers. I think I'm going to write it in Kotlin but I'm open to suggestions. Would you guys like to play it/contribute to it's development for shits and giggles?

After listening to too many andrew tate podcasts i started getting up very early (to start working) and staying late (to continue working). I am now basically like a robot who lives just to work and do nothing else. I realized as i worked for.... Let me calculate..... 9am till now 1:19am lets round it to 1 so thats 9-1 =8 so 24h-8 =16h a day minimum €& and after bour 10-12h of nonstop work my concentration drastically dropped. I stsrted coding bugs . I couldnt figure out how to debug the most dumbest shit. Dumbest shit stsrted to look like the hardest shit. "happy or not i as a man will do the work anyways"-andrw tate. Fine. I tried it and now i fucked my concentration. Its impossible its humanly not possible you fucking cunt to do this lying fucking fag gay bitch ass shithead tate talking shit all the time while scamming dumb fucktards for 65$ a month on a course. Fuck off. Bitch retard overglorifying himself to create a false image and reality as if he's a superhuman. Hes a big pile of fucking shithole. Garbageman fucking himself of egocentric shithell bet he also gangbang his own asshole and cum dumps into his mouth daily Fuck offf

Today I got a change request that told me I needed to create a report showing orders broken down by their order types as percentages.

Now the order types part involve SQL queries that translate business rules into multiple table joins and it's quite nasty (200 + lines or so).

Naturally the change request doesn't mention any of these business rules and how to tell that orders are of a specific type... but alas!

It teaches me how to calculate a percentage :)

... like "10 / 100 * 100 = 10%"

I don't know whether to laugh or feel insulted.

In my program I had to calculate something and had to write numbers raised to some powers.
Every time I run my code it was showing a astounding huge numbers that were far from being correct. They were astronomical.
It literally took me a week to figure out that the symbol for exponentiation (e) is different from double Astricks (**). 😅😅😅

Just wrote a small program for university to calculate the intersection of three lines (they should meet in one point). Well sometimes I had a issue so I just calculated all three points and took the points which are the same.

If it's stupid and works it ain't stupid

A friend of mine studies mathematics and he told me about a project he has to do and we worked on it together a bit: Numerically calculate the arctan.
He dug out a nice series by (the one and only) Euler and we started massaging the thing to get it into a bit of a nicer form (there were (n!)^2 and other shenanigans) and we eventually succeeded after some stupid simple errors and arrived at a quite simple recursive progression. After that he also found a formula to transform a given value into the region where our formula actually mimics the arctan and we proceeded to proof this formula. The programming was straight forward and now we only have to find the radius of convergence which I suspect is pi^2 (but no proof).
I had a lot of fun doing this, fiddling around with the formulas and then programming it to see it actually becoming real.

In school we had to make a very basic program to calculate some stuff of triangles, based on the three points of it..
Somehow i got completely into it and made "some stuff" to everything possible, w/ a stylable canvas where shit was drawn to.
Actually that turned out to be very fun.🤓

1. Went to try chat.openai.com/chat

2. "Write a java program that uses a singleon pattern to calculate the sum of the first 100 prime numbers"

3. ???? HOW DOES IT DO THAT

So I'm working on an assignment for my Computer Science class, and we have to basically compute strings into hash values and then modulo it by 1 million and put it into the hash table. But the value keeps overflowing and turning into negative values, anyone know how I can calculate the key?

(BTW, the hashcode is the same code that is calculated by the .hashCode function in Java)

How do you guys calculate complementary color?

I feel like I have a good algorithm but I also feel like I've been posting too much recently so I just want to know what you guys do to calculate complementary color.

tell me guys what would you prefer:

function a(){
..
b(..)
..
b(..)
..
}
function b(p1,p2,p3,p4,p5,p6){.
...
}

or

function a(){
..
b(..)
..
b(..)
..
}

function b(
p1,
p2,
p3,
p4,
p5,
p6
){
...
}

if you read this rant before expanding, you got a complete context on how what function a is, its calling b 2 times and how function b looks.

if instead of the first option, i had used 2nd block, you wouldn't even know the 2nd param of b function without expanding this rant.

my point?
i prefer to keeping unnecessary info on one line. and w lot of linters disagree by splitting up the code. and most importantly , my arrogant tl disagree by saying he prefers the splitted code "for readability" and becaue "he likes code this way, old-eng1 likes this and old-eng2 likes this" .

why tf does an ide have horizontal a scrolling option available when you are too stupid to use it?

ok, i know some smartass is going to point that i too can use vertical scrolling, but hear me out: i am optimising this!

case 1 : a function with 7 params is NOT split into 7 lines. lets calculate the effort to remember it
- since all params could have similar charactersticks ( they will be of some type, might have defaults, might be a suspendable/async function etc), each param will take similar memory-efforts points. say 5sp each.
- total memory-efforts= 5sp *7 = 35 sp.
- say a human has 100 sp of fast memory storage, he can use the remaining 65 sp for loading say 5 small lines above or below.
- but since 5 lines above are already read and still visible on screen, they won't be needed to be loaded again nd again, nd we can just check the lines below.
- thus we are able to store 65+35+65 = 165 sp or about 11 lines of code in out fast memory for just a 100sp brain storage

case 2 function with 7 params IS split into 7 lines.
- in this case all lines are somewhat similar. 5sp for param lines as they are still similar which implies same 35sp for storing current function and params
- remaining 65sp can only be used to store next 5 lines of 13sp as the previous code is no longer visible.
- plus if you wanna refresh the code above, you gotta scroll, which will result in removing bottom code from screen , and now your 65sp from bottom code is overwritten by 65sp of top code.
- thus at a time, you are storing only 6 lines worth of code info. this makes you slow.

this is some imaginary math, but i believe it works

Today.
Computer science classroom.
We had to do a very simple program in Java: the user have to insert four coordinates, the program create two points and then a segment, in the end calculate the length of the segment.
Me: about 30 minutes.
Rest of the class: 2 hours aren't enough.

I think I'll never understand...

I really cannot see why there still isn't an API in Java where I can get an hashing algorithm without having to catch a checked exception.

Granted, Bouncy castle is a top library. But of you just have a small application with a single method wanting to hash a few values... It's so nuts and unnecessary.

So what do you do in the catch block? Either throw a checked exception (because without that hash your app won't work), or calculate a replacement. But if it were that easy, I wouldn't have needed a hash on the first place.

I really wonder what the java developers had in mind.

Same with IO exception. I'm beginning to like python more and more.
And, of course, kotlin.

Me and my study group have been developing a system for a company the last semester, but the system isn't done at the end of the semester (which is fine) and the company have mentioned that they want to pay us to finish the system.
The problem is that we have a very little knowledge about how much time it is going to take.
So what are we gonna say? It's pretty hard to calculate a price and estimate any time frame

I don't know how many of you uses IBM Watson api (personality insights). We use in our office. They send back a huge data known as big 5 needs etc. They find the personality of a person from his speech. like anger, happiness etc. I don't understand how they calculate them and also every client trust the data what ibm tells is correct. if it was you if you have done that feature too many questions might have come.

that's the difference between mnc and a startup

Just when I thought that surely a single SIMD dot product instruction must be the fastest way to calculate a damn dot product on a processor, agner fogs instruction tables come flying out, hitting me over the head telling me that manually calculating a dot product may actually be faster sometimes

Why must computers be like this?

I just came out of a bad relationship with hardware rasterization being horribly slow and now I can't even trust my processor to do things properly

This is how people develop trust issues

Some good linux mint time tracker? Best would be if it was free(speech and beer free), being able to calculate money earned based on working hours etc and desktop client. I have no interest in using Toggl or something like that

Trying to calibrate a gopro to remove fisheye effect with OpenCV.

The documentation of the script I'm using says "Lastly the program will calculate the total reprojection error. The closer this value is to zero the better. I usually like values under 0.1. Play around with the calibration, see what works and what improves it."

I spent all the afternoon recording video, extracting images and using the script. The lower error I got was 0.6, and the supposed undistorted image was actually more distorted than the original one.

So frustrated 😤

Who the fuck invented recursive😡, it sucks in numerical computation, it takes excessive amount of memory, recomputation and fffffffuck😡. To calculate fibonacci of 50, it feels like MARK I. fuck they do nothing more than calling, like Peter calling Peter...😡

Apple watch 6
We use advanced algorithm to calculate your blood O2

Boohoo!! It’s a 2 line formula not a advanced algorithm

What a piece of shit
I might buy one though 🤓

Nothing better than Rust and LALRPOP. I've been trying to play with Bison and C++ for the whole quarantine and nothing would compile. I just sat for two days with Rust and LALRPOP and I was able to make a small interpreter that can make new variables, calculate simple expressions and print stuff. Like this:

var = 5 + 3;
print var;
var = 2 * var + 4;
var2 = 3 * var + 3 * (var + 4);
print var2 * var;

And all this in just two days. I have no Rust experience except for toying with it on an online playground. I have no LALRPOP nor parsing experience. Two days.

Now, it's not like I wouldn't be able to do this in C++ too if somebody told me how to. But nobody has. And the documentation online is gruesome. None of the bison example I found online could compile. This is why documentation matters people! Honestly, if there's one reason I think old projects die, it's because they ether don't update themselves OR they don't update their documentations. Look at the US government now, looking for COBOL programmers.

Hey, I actually calculated and averaged everything, and I found out I only spend about 43.4 repeating percent of my time awake actually working.
Can you all calculate yours as well to see if I’m a lazy slob or if this is normal?

I was so bored the other day, that I wrote a fat client in C# to calculate happy numbers. I used BackgroundWorker class, because I was hoping to be able to cancel the calculation process. It turned out I couldn't. Rats.

Out of pure frustation, I wrote the same program in Java using Swing and SwingWorker. Here, the cancel feature worked just fine.

And then I had this "Wait ... What?!" moment, when I realized, that one of the programs was incredible slow. So I rewrote both codes, so that they used the same algorithm and similar classes. I compiled the C# program as release and ran it stand-alone, while I started the Java application from within the eclipse IDE.

The C# program needed 42.681 seconds for 100,000 happy numbers, while the Java application completed the same task after 0.986 seconds. The result sets of both programs are the same.

Maybe I need a new PC (2007, 64 bit, 8 GB RAM, Windows 10). Or I'll get rid of C#.

Pick up a course, or like in my case a book and start. Try to understand as much as you can, try to write some easy programs that will maybe calculate, convert or display something. Anything, basically. You can always start a course that teaches you straight from the beginning for eg. boe to build a game, website or anything you're interested in. Just one thing to remember. Never make breaks that will last longer than 2 days. Keep on pushing and follow the course. Then you'll definitely achieve something worth your time.

Non-rant rant here..

Anyone living in Europe that got his/her devrant stickers? If so can you tell me about how much time approximately it took to ship, so I can calculate, as i need to be at another place at about a month..

Keep ranting!

How could you calculate: 2a+7*2b when a and b is a nil value. Math aren't logic...

I could calculate the percentage of a value from a total set right from the top of my head. This includes large numbers like for example; finding the percentage of 1040 from 75000 = 1.377%, 344 from 5400 = 6.37% and so on...

But most times when I come across scenarios to apply such calculations on code I find myself googling for formulas and then I wonder; how am I able to come to a valid result when faced with similar challenge but could not recall or tell the formula my funny brain is deriving it's results from.

Maybe my brain isn't even using a formula. :/
So I guess because from pondering on how I arrived at results, I could tell I'm starting from an "if"...
Like:

If 25 of 100 = 25%
and 45 of 250 = 18%
Then 450 of 2400 will equal 18.7...%

Ask me what formula was used in the first "if" condition and I can't tell because that's common sense for me.