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Search - "so-precise"
It's maddening how few people working with the internet don't know anything about the protocols that make it work. Web work, especially, I spend far too much time explaining how status codes, methods, content-types etc work, how they're used and basic fundamental shit about how to do the job of someone building internet applications and consumable services.
The following has played out at more than one company:
App: "Hey api, I need some data"
API: "200 (plain text response message, content-type application/json, 'internal server error')"
App: *blows the fuck up
*msg service team*
Me: "Getting a 200 with a plaintext response containing an internal server exception"
Team: "Yeah, what's the problem?"
Me: "...200 means success, the message suggests 500. Either way, it should be one of the error codes. We use the status code to determine how the application processes the request. What do the logs say?"
Team: "Log says that the user wasn't signed in. Can you not read the response message and make a decision?"
Me: "That status for that is 401. And no, that would require us to know every message you have verbatim, in this case, it doesn't even deserialize and causes an exception because it's not actually json."
Team: "Why 401?"
Me: "It's the code for unauthorized. It tells us to redirect the user to the sign in experience"
Team: "We can't authorize until the user signs in"
Me: *angermatopoeia* "Just, trust me. If a user isn't logged in, return 401, if they don't have permissions you send 403"
Team: *googles SO* "Internet says we can use 500"
Me: "That's server error, it says something blew up with an unhandled exception on your end. You've already established it was an auth issue in the logs."
Team: "But there's an error, why doesn't that work?"
Me: "It's generic. It's like me messaging you and saying, "your service is broken". It doesn't give us any insight into what went wrong or *how* we should attempt to troubleshoot the error or where it occurred. You already know what's wrong, so just tell me with the status code."
Team: "But it's ok, right, 500? It's an error?"
Me: "It puts all the troubleshooting responsibility on your consumer to investigate the error at every level. A precise error code could potentially prevent us from bothering you at all."
Team: "How so?"
Me: "Send 401, we know that it's a login issue, 403, something is wrong with the request, 404 we're hitting an endpoint that doesn't exist, 503 we know that the service can't be reached for some reason, 504 means the service exists, but timed out at the gateway or service. In the worst case we're able to triage who needs to be involved to solve the issue, make sense?"
Team: "Oh, sounds cool, so how do we do that?"
Me: "That's down to your technology, your team will need to implement it. Most frameworks handle it out of the box for many cases."
Team: "Ah, ok. We'll send a 500, that sound easiest"
Me: *..l.. -__- ..l..* "Ok, let's get into the other 5 problems with this situation..."
Moral of the story: If this is you: learn the protocol you're utilizing, provide metadata, and stop treating your customers like shit.22
To those that think they can't make it.
To those that are put down by those that don't understand you.
And to those that have never had a dream come true.
Not a rant, but the story of how I got into programming
I've always been into tech/electronics. I remember being told once that when I was 3, I used to take plug sockets to pieces. When I was 7, I built a computer with my dad.
There isn't a thing in my room that hasn't been dismantled and put back together again. Except for the things that weren't put back together again ;)
When I was 15, I got a phone for Christmas. It was a pretty crappy phone, the LG P350 (optimus ME). But I loved it all the same.
However I knew it could do a lot more. It ran a bloated, slow version of Android 2.2.
So I went searching, how can I make it faster, how to make it do more. And I found a huge community around Android ROMs. Obviously the first thing I did was flashed this ROM. Sure, there were bugs, but I was instantly in love with it. My phone was freed.
From there I went on to exploring what else can be done.
I wanted to learn how to script, so over the weekend I wrote a 1000 line batch (Windows cmd) script that would root the phone and flash a recovery environment onto it. Pretty basic. Lots of switch statements, but I was proud of it. I'd achieved something. It wasn't new to the world, but it was my first experience at programming.
But it wasn't enough, I needed more.
So I set out to actually building the roms. I installed Linux. I wanted to learn how to utilise Linux better, so I rewrote my script in bash.
By this time, I'd joined a team for developing on similar spec'd phones. Without the funds to by new devices, we began working on more radical projects.
Between us, we ported newer kernels to our devices. We rebased much of the chipset drivers onto newer equivalents to add new features.
Well, it was exam season. I was suffering from personal issues (which I will not detail), and that, with the work on Android, I ended up failing the exams.
I still passed, but not to the level I expected.
So I gave up on school, and went head first into a new kind of development. "continue doing what you love. You'll make it" is what I told myself.
I found python by contributing to an IRC bot. I learnt it by reading the codebase. Anything I didn't understand, I researched. Anything I wanted to do, google was there to help me through it.
Then it was exam season again. Even though I'd given up on school, I was still going. It was easier to stay in than do anything about it.
A few weeks before the exams, I had a panic attack. I was behind on coursework, and I knew I would do poorly on exams.
So I dropped out.
I was disappointed, my family was disappointed.
So I did the only thing I felt I could do. I set out to get a job as a developer.
At this stage, I'd not done anything special. So I started aiming bigger. Contributing to projects maintained by Sony and Google, learning from them. Building my own projects to assist with my old Android friends.
I managed to land a contract, however due to the stresses at home, I had to drop it after a month.
Everything was going well, I felt ready to get a full time job as a developer, after 2 years of experience in the community.
Then I had to wake up.
Unfortunately, my advisors (I was a job seeker at the time) didn't understand the potential of learning to be a developer. With them, it's "university for a skilled job".
They see the word "computer" on a CV, they instantly say "tech support".
I played ball, I did what I could for them. But they'd always put me down, saying I wasn't good enough, that I'd never get a job.
I hated them. I'd row with them every other day.
By God, I would prove them wrong.
And then I found them. Or, to be more precise, they found me. A startup in London got in contact with me. They seemed like decent people. I spoke with their developers, and they knew their stuff, these were people that I can learn from.
I travelled 4 hours to go for an interview, then 4 hours back.
When I got the email saying they'd move me to London, I was over the moon.
I did exactly what everyone was telling me I couldn't do.
1.5 years later, I'm still working with them. We all respect each other, and we all learn from each other.
I'm ever grateful to them for taking a shot with me. I had no professional experience, and I was by no means the most skilled individual they interviewed.
Many people have a dream. I won't lie, I once dreamed of working at Google. But after the journey I've been through, I wouldn't have where I am now any other way. Though, in time, I wish to share this dream with another.
I hope that all of you reach your dreams too.
Sorry for the long post. The details are brief, but there are only 5k characters ;)23
Hello again, everyone. As Sunday comes to a close, and Monday is fast approaching, I'll share with you the likely cause of my death by stroke and/or heart attack:
MONDAY MORNING COFFEE OF HORROR
Disclaimer: Do NOT try this. I am a professional addict. I am not responsible for anything this brew from hell causes to you and/or those around you.
So, I wake up, feeling like I haven't slept for days, or just notice the fucking alarm clock shrieking because I pulled an all-nighter.
Step 1: Silence alarm clock via mild violence.
Step 2: Get the coffee machine to brew some filter coffee (espresso works too)
Step 3: Get milk and ice cubes from the fridge (both are needed, I don't care if you don't like milk, trust me)
Step 4: Get 2 spoonfuls (not tea spoon, and actually FULL spoonfuls) into the biggest glass you have
Step 5: Pour just a little of the warm filter coffee into the glass, just to get the instant coffee wet enough, and start mixing, until the result looks like the horror you unleashed in your toilet a few minutes ago (and will do so again in a few)
Step 6: Mix in 25-50 ml milk, just for the aesthetic change of colour of the devil-brew, and to add the necessary amount of lactic acid to react with the coffee to produce chemical X
Step 7: Add ice cubes to taste (if you are new to this, add a lot)
Step 8. Slowly add the filter coffee while mixing furiously, so that the light brown paste at the bottom get dissolved (it's harder than it sounds)
Now, take a deep breath. Before you is a disgusting brew undergoing a chemical reaction, and your moves need to be precise otherwise it will explode. Note that sugar or any other form of sweetener is FORBIDDEN, as it will block the reaction chain and the result won't be as potent.
Take a straw (a big one, not those needle-like ones that some cafeterias give to fool you into believing that the coffee is more than 150ml). Put it inside the mix, and check that the route to the bathroom is free of obstacles.
Now, clench your abs, close your nose if you are new to this, grab the straw and DRINK!
DRINK LIKE THERE IS NO TOMORROW!
THAT BROWN DEVIL'S BILE WILL HAVE YOUR INTESTINES SPASM AND DANCE THE MACARENA WHILE TWIRLING A HULA HOOP!
YOUR HEART WILL GO OVERDRIVE HARDER THAN YOUR PC'S CPU WHEN COMPILING ON ECLIPSE AND BROWSING WITH IE AT THE SAME TIME.
The combination of caffeine and lactic acid will bring out the perfectly disgusting combination of sour and bitter usually expected in rotting lemons. After you manage to chug it down (DON'T SPILL OR SPIT ANY!) you have 30 - 60 seconds max to run to the porcelain throne, where you will spend the next 30-60 minutes.
After that, nothing can stop you! You will fix bugs, write entire codebases from scratch, punch that annoying coworker, punch that boss! You will be a demigod among mortals for the next 6-8 hours!
Your recipes for Monday morning coffee?15
"4096 bit ~ 96 hours is what he said.
IDK why, but when he took the challenge, he posted that it'd take 36 hours"
As @cbsa wrote, and nitwhiz wrote "but the statement was that op's i3 did it in 11 hours. So there must be a result already, which can be verified?"
I added time because I was in the middle of a port involving ArbFloat so I could get arbitrary precision. I had a crude desmos graph doing projections on what I'd already factored in order to get an idea of how long it'd take to do larger
@p100sch speculated on the walked back time, and overstating the rig capabilities. Instead I spent a lot of time trying to get it 'just-so'.
Worse, because I had to resort to "Decimal" in python (and am currently experimenting with the same in Julia), both of which are immutable types, the GC was taking > 25% of the cpu time.
Performancewise, the numbers I cited in the actual thread, as of this time:
largest product factored was 32bit, 1855526741 * 2163967087, took 1116.111s in python.
Julia build used a slightly different method, & managed to factor a 27 bit number, 103147223 * 88789957 in 20.9s,
but this wasn't typical.
What surprised me was the variability. One bit length could take 100s or a couple thousand seconds even, and a product that was 1-2 bits longer could return a result in under a minute, sometimes in seconds.
This started cropping up, ironically, right after I posted the thread, whats a man to do?
So I started trying a bunch of things, some of which worked. Shameless as I am, I accepted the challenge. Things weren't perfect but it was going well enough. At that point I hadn't slept in 30~ hours so when I thought I had it I let it run and went to bed. 5 AM comes, I check the program. Still calculating, and way overshot. Fuuuuuuccc...
So here we are now and it's say to safe the worlds not gonna burn if I explain it seeing as it doesn't work, or at least only some of the time.
Others people, much smarter than me, mentioned it may be a means of finding more secure pairs, and maybe so, I'm not familiar enough to know.
For everyone that followed, commented, those who contributed, even the doubters who kept a sanity check on this without whom this would have been an even bigger embarassement, and the people with their pins and tactical dots, thanks.
So here it is.
A few assumptions first.
Assuming p = the product,
a = some prime,
b = another prime,
and r = a/b (where a is smaller than b)
w = 1/sqrt(p)
(also experimented with w = 1/sqrt(p)*2 but I kept overshooting my a very small margin)
x = a/p
y = b/p
1. for every two numbers, there is a ratio (r) that you can search for among the decimals, starting at 1.0, counting down. You can use this to find the original factors e.x. p*r=n, p/n=m (assuming the product has only two factors), instead of having to do a sieve.
2. You don't need the first number you find to be the precise value of a factor (we're doing floating point math), a large subset of decimal values for the value of a or b will naturally 'fall' into the value of a (or b) + some fractional number, which is lost. Some of you will object, "But if thats wrong, your result will be wrong!" but hear me out.
3. You round for the first factor 'found', and from there, you take the result and do p/a to get b. If 'a' is actually a factor of p, then mod(b, 1) == 0, and then naturally, a*b SHOULD equal p.
If not, you throw out both numbers, rinse and repeat.
Now I knew this this could be faster. Realized the finer the representation, the less important the fractional digits further right in the number were, it was just a matter of how much precision I could AFFORD to lose and still get an accurate result for r*p=a.
Fast forward, lot of experimentation, was hitting a lot of worst case time complexities, where the most significant digits had a bunch of zeroes in front of them so starting at 1.0 was a no go in many situations. Started looking and realized
I didn't NEED the ratio of a/b, I just needed the ratio of a to p.
Intuitively it made sense, but starting at 1.0 was blowing up the calculation time, and this made it so much worse.
I realized if I could start at r=1/sqrt(p) instead, and that because of certain properties, the fractional result of this, r, would ALWAYS be 1. close to one of the factors fractional value of n/p, and 2. it looked like it was guaranteed that r=1/sqrt(p) would ALWAYS be less than at least one of the primes, putting a bound on worst case.
The final result in executable pseudo code (python lol) looks something like the above variables plus
while w >= 0.0:
if (p / round(w*p)) % 1 == 0:
x = round(w*p)
y = p / round(w*p)
if x*y == p:
w = w + i
Still working but if anyone sees obvious problems I'd LOVE to hear about it.39
1. So i tindered.
2. I got a really nice girl.
3. We chatted really long and good.
4. We tried to meetup it did not work because of our schedule. New
job on my end, she is a student.
5. I thought its over. Fine whatever.
6. She gives me her number.
7. We continue chat on whatsapp
8. Blablabla 3 days long, she gets bored and tries to friendzone me
9. I revert the shit and state i wanna be serious and there wont be a
friendzone/nice guy comin from me.
10. She happy and continues to chat.
11. I get emtionally invested in her.
12. We exchange thoughts dreams and music.
13 We want to meetup at weekend. I cant. Got a family wedding all
14. We want to meetup the second week.
I cant. Im off on a company trip. Again new job here.
15. So we say in the week after I get back.
15a. Before the weekend we need to deliver an rc and go all out to hold
15b. We deliver, but shit happens on the customer side. His fault but we
get the blame.
15c I go onto the company trip.
16. We chat and i send her pictures of the trip over the weekend so she
sees I care.
17. She seems fine. And happy.
18. I come back from the trip late night and need to work the next day
19. I work jetlag style. And try to fix the shit from last week.
20. I come home really tired and looking forward to date day tomorrow.
21. I cant do anything. My home looks like shit and the bag still
unpacked. I just eat and fall asleep.
I feel bad bcs my home will turn her down instantly if we make it to my
Need to hope that it does not come to this.
22. Date day comes. Today.
23. I wake up at 6 early to plan ahead to make sure my clothes are fine
and i arrive on time in the office to exit early.
24. I expect to check what goes on today in the city and give her the
location to meet and time.
25. I enter office and immeadetly get caught up in meeting planning, dev
questions and the meeting itself because the project is on edge.
26. We have a 5hours long meeting where people go on and on and on.
27. 3h later in the meeting:
my brain was fried and around 12 i go to lunch with some people.
28. Meanwhile the city is turning into a rainy mess of a shitty day. No
way I can have a nice walk with her like that. Bars and coffeshops are
just to boring.
29. So i eat to regain some sense and we go back to the office.
Meanwhile I am thinking all kinds of locations and stuff in my head.
30. Havent given her any update since a good morning in the morning.
31. We reenter the meeting. Things continue like before. The project is
on impossible demands and impossible timelines. Still we try to do our
32 3h later on 3pm I tell her i am in a long meeting and working on a
33. shes not happy.
34. I get a call from a relative
35. i need to go out and take the call. not good for the collegues.
again new job here.
36. family trouble, money trouble, goverment demands. I promise to
handle that tomorrow. Before work.
37. i get back into the meeting.
38. still super slow and no results.
39. need to focus but start to check for locations on my phone.
40. she asks me where i am
41. I send her my location.
42. she thinks i am saying she should pick me up!
43 i joke and say no definitly not.
44. shes pissed.
45. I decide for a coffeeshop. after work. and send her the location
46. She says to call it off.
47. I go all in and go romance style. I say ill wait there even if she
does not come to show her how much i care.
U know to avoid the lets do it some other time fuckery and then it never
47. She goes quiet.
48. 2h later we finish the meeting. Meanwhile QA foudn a bug we need to
fix because why not.
49. I got 30 minutes to find the bug and fix it before I need to go to
uphold my word.
50. I find out what to do, but it might break a lot of other things
without careful test and implementation. Collegues says he takes it.
51 I feel bad but I need to go. I even leave earlier because otherwise I
would not be on time.
52. I arrive 15 minutes early. I grab two coffee2go and wait outside,
53. Shitty weather, sometimes rain, sometimes sunny, cant decide what it
54. The weather is just like how I feel.
55. I wait 1 1/2h
56. I think I should feel stupid, For gods sake its tinder. People dont
give a crap, Enough people around why should I Invest so much into this?
But I dont feel stupid. Because this is how I want it. I dont want
appointments, I dont want safety. I decided for her and I went all in.
57. I send her pics from the sceneray as proof that I waited,
58. I think I blew it. She is still quiet.
59. Friends are asking me for plans for the weekend. I wish I could say
I already have some with her.
60. I feel lost right now. But my head says I put too much stress on
her, And i fucked up with the planning. I should have been more precise.
My head also says that i am putting myself into the victim role, which
is wrong always. Should I continue to reach out to her? Is there
something I could do still?66
Nothing scares a developer more than a follow up question from the other person while ordering takeout, after a very precise order.
This is why we build apps, so we don't have to deal with trauma like this! xD5
A rather long(it's 8 hrs long to be precise) story
So I just finished an amazing homework assignment. The goal was to open a new shell on Linux using a C program. We were asked to follow instructions from http://phrack.org/issues/49/14.html . However the instructions given were for 32 bit processors and we had to do same for 64 bit machines. In a nutshell we had to write a 64 bit shell code and use buffer-overflow technique to change the return address if the function to our shell code.
I was able to write my own shellcode within 1hr and was able to confirm that it's working by compiling with nasm and all. Also the "show-off-dev" inside me told me to execute "/bin/bash" instead of "/bin/sh"(which everyone else was going to do). After my assembly code was properly executing shellcode, I was excited to put it in my C code.
For that, I needed opcodes of assembly code in a string. Following again the "show-off-dev" inside me, I wrote a shell script which would extract the exact opcodes out of objdump output. After this I put it in my C code, call my friend and tell him that "hell yeah bro, I did it. Pretty sure sir is gonna give me full marks etc etc etc". I compiled the code and BOOM, IT SEGFAULTS RIGHT IN FRONT OF MY FRIEND. Worst, friend had copied a "/bin/sh" code from shellstorm and already had it working.
Really burned my ego, I sat continuously for 8 hrs in front of my laptop and didn't talk to anyone. I was continuously debugging the code for 8 hrs. Just a few minutes ago, I noticed that the shellcode which I'm actually putting in my C code is actually 2 bytes shorter than actual code length. WHAT THE F. I ran objdump manually and copied the opcodes one by one into the string (like a noob) and VOILA ! IT WORKED !!!
TURNS OUT I DIDN'T CUT THE LAST COLUMN OF OPCODES IN MY SHELL SCRIPT. I FIXED THAT AND IT WORKED !!
THE SINGLE SHITTY NUMBER MADE ME STRUGGLE 8 HRS OF MY LIFE !! SMH
Lessons learnt :
1)Never have such an ego that makes you think you're perfect, cuz you're retarded not perfect
2)Examine your scripts properly before using them
3)Never, I repeat NEVER!! brag about your code before compiling and testing it.
If you've read this long story, you might as well press the "++" button.6
As a consultant, you get tasked with a variety of stuff. Last few weeks been struggling to maintain an old C++ application that was written by a complete tool of an a$$hole with zero knowledge on how to write maintainable and production quality code. It would hardly run without a crash. First it was a challenge I had to accept, but as I stabilized the code and just fell over even more traps, I had to admit defeat and review my approach.
Rewrite is something I would choose last, but this one ticked all the marks worthy of a rewrite. So, the customer is a very friendly researcher and gladly spent 15 hours with me explaining all the math and concepts - just a delight for a programmer to have such a customer. Two days in, with a DDD approach - a functional, more precise, faster and stable application.
Sometimes there is no rant to share, it's rare to have that perfect communication with a customer that is so dedicated that he spends so much time teaching you his speciality and actually understand your approach. DDD was really a lifesaver here, by using it's key concepts and ubiquitous language. The program is essentially 8000 lines of math, but wrapping it up with value objects and strong domain models made me understand his domain and him mine. It also allowed me to parallelize the computations, giving me a huge performance boost. Textbook approach, there will not be many like this!4
How will I tell him codeacamy free certificates isn't knowing about programming and cramming syntax isn't programming also🤦🏽♂️11
Once I was told to interview a junior dev. It was my first ever interview from the side of employer, so I hope this story will never appear here told by my vis a vis. Ok, to the subject. Position of jun iOS dev. It was so long time ago, the manual reference counting was the only option on a platform. And I ask her, to describe how the manual ref counting actually working. She cannot answer this. I try to split the theme in to a pieces and ask more precise questions, about this or that situation, what should happen, or at least how she thinks it may work. She cannot answer this as well. Technically for me it was the end of interview, but I cannot give up on her that easy so I ask her to tell me what she is doing on her current position and we had spoke for another 15 min. TLDR she has failed.
Next year, another company, interview for the same position, the same people on the scene. So, I remember her, she remembers me. We both know the question I will ask. TLDR she has failed on the very same question.
Oh god knows how bad I feel after rejecting her second time. But I was little more experienced with the interviews and I was sure this question should not be a problem to those who have little experience on a platform.
Several years has passed. Another company. I’m about to jump to the next company and project managers are doing their best to fill the position with ANYONE as it’s a big fight for developers at the moment. So they have found a junior inside the company who wants to try. And SAME PEOPLE on the scene. Same question on a table. And some other questions, and more. So she’s got that job.
After many years I can say she could have a job from the first time if only I try to question her about other sides of day to day code writing. It was just me - not very experienced interviewer and not very experienced mid developer. I only hope she is not hating me a lot.6
A follow up for this rant : https://devrant.com/rants/1429631/...
its morning and i have been awoke all night, but i am so happy and feel like crying seeing you people's response. :''''') Thank-You for helping a young birdie like me from getting exploit.
In Summery, I am successfully out of this trickery, but with cowardice, a little exploited and being continuously nagged by my friend as a 'fool'.
Although i would be honest, i did took a time to take my decision and got carried away by his words.
After a few hours of creating a group, he scheduled a conference call , and asked me to submit the flow by which my junior devs will work.
At that time i was still unclear about weather to work or not and had just took a break from studies. So thought of checking the progress and after a few minutes, came up with a work-flow, dropped in the group and muted it.
At night i thought of checking my personal messages , and that guy had PMed me that team is not working, check on their progress. This got me pissed and i diverted the topic by asking when he would be mailing my letter of joining.
His fucking reply to this was :"After the project gets completed!"
(One more Example of his attempts to be manipulative coming up, but along with my cowardice ) :/
WTF? with a team like this and their leader being 'me'( who still calls him noob after 2 internships and 10 months android exp), this project would have taken at least one month and i was not even counting myself in the coding part(The Exams).
So just to clarify what would be the precise date by which he is expecting the task, to which he said "27th"(i.e, tomorrow!)
I didn't responded. And rather checked about the details of the guy( knew that the company was start-up, but start-ups does sound hopeful, if they are doing it right) .A quick social media search gave me the results that he is a fuckin 25 year old guy who just did a masters and started this company. there was no mention of investors anywhere but his company's linkedin profile showed up and with "11-50" members.
After half an hour i told him that am not in this anymore, left the group and went back to study.(He wanted to ask for reasons, but i denied by saying a change of mind ,personal problems, etc)
Well the reality is over but here comes the cowardice part:
1)Our team was working on a private repo hosted on my account and i voluntarily asked him to take back the ownership, just to come out of this safely w/o pissing him off.
2)The "test" he took of me was the wireframe given by their client and which was the actual project we 5 were working on. So, as a "test", i created 15 activities of their client's app and have willingly transferred it to them.
3) in my defence, i only did it because (i) i feared this small start-up could harm my reputation on open platforms like linkedin and (ii)the things i developed were so easy that i don't mind giving them. they were just ui, designed a lot quickly but except that, they were nothing(even a button needs a code in the backend to perform something and i had not done it) . moreover, the guys working under me had changed a lot of things, so i felt bad for them and dropped the idea of damaging it.
Right now am just out of sleep, null of thoughts and just wondering weather am a good person, a safe player or just a stupid, easily manipulated fool
But Once again My deepest regard from my heart for @RustyCookie , @geaz ,@tarstrong ,and @YouAreAPIRate for a positive advice.
My love for devrant is growing everyday <3 <3 <3 <36
I learnt something from every single project I made, but this one... it was really different, new language, new library, new hardware.
there's an infopoint in a place, that was really hard to use (ball mouse over a monitor)
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
Is it ok if i create a trello board and create cards quickly without following any type of agile methodology because the project is only for me? I cant spend hours of my time writing exact and precise cards following some standard
Id have cards like Todo Doing and Done
Thats it just so i can keep track quickly and focus most of my time on code
Is this ok8
So it is surely known already that I run new android as soon as it comes out.
But surprise that's not bleeding edge.
And you know I like stuff beyond bleeding edge.
The server I have has a job to do. Well daily job to be precise.
I have script to update my android sources. But they are not on tags. That's lame. Master branch ouu yeah now we are talking. Script is run every day and builds the ROM. But since I'm not in the mood to patch every day the build with magisk the script does it for me haha.
Ouu yeah also I set up the sevrer to upload the ota package to my VPS and there I have my ota update server. So every day at 9am I get notification to update my system.
wk142: geekiest non-dev activity
Definitely music production. Especially when using real instruments and capture their audio, so everything is quantized (i.e. fixed to time grid) and very tightly recorded. I make metal, 'tis a precise genre. For one riff it sometimes take 20 takes, since I record 4 times my guitar.
I've learned for the past 10 years how to compose, mix, masterize, but also learned how to sing, learned how to play the guitar, learned how to compose drums and using my keyboard to play drums (people are often surprised I can play double kicks @ 230 bpm) so that I can have a basic drum layer to further edit
Pretty geeky, not a common subject I talk to people about :D2
//Another 3D printer rant
So as many know im student.
And i have been 3D printing for years now.
And like 2 months ago i have decided to buy 3D touch (BLTouch shit clone).
BLTouch is like 40-50$
and 3D touch is 15$.
Yes its a clone but from what i heard the accuracy is not that bad really.
I plug it in and try the accuracy test in marlin.
Standard deviation of 0.25mm
That is 1 freaking fucking layer.
Heck 0.05mm more then 1 layer.
So i read how it works.
OK its not that complicated.
Basically a hall sensor.
So i unscrewed the sensor and magnetized the screw and probe.
I put it together again but now with only 0.6mm gap between the screw and the top of the sensor. (Before it was really deep in there).
I try the accuracy test again. (Yes i have run the tests multiple times and got an average of them in the past tests and future tests too).
Still horrible but better.
So i go around internet and i find one guy saying turn on debugging in marlin.
OK i mean i might just as well.
That is better then some old original BLTouch probes.
I hope to get BLTouch v3.1 in future but this will do for now i guess.
So would i recommed the shit cheap clones ?
They are unrealible pieces of shit and you have to spend hours upon hours to make them work properly and even then they wont get to the accuracy of new BLTouch.
Yes there is also the point that Z motor isnt really perfect either and 1/16 micro stepping is also shit and you cant go that precise.
Oh and while typing this the fucking shit probe decided it would be a great idea to fail and failed.
Resoulting in a deep hole in my printing bed.
So if you think the 15$ is a great value NO.
DONT BUY THE CLONE.
I have learnt my lesson.5
So I had this thought all of a sudden. (Without any drug in my system)
Why are we still developing same old systems, softwares and web applications till now?
Websites, games and creativity involved development are understandable because people have different taste.
But workflow and process are supposed to be precise, standardized and consistent. No?
Is it because businesses are operating in various ways? Then again why?
Shit. I should stop my thinking at this level. 😑5
Fuck this dieing pice of cheap chinese android crap. Sure it was anly 250 bucks, but holy hell... I could deal with the software side... Android 6 isn't the newest but eh...
But now the fucking hardware is failing too... To be more precise the buttons seam to randomly fire, which is really fucking annoying. Sometimes when both back and the other button fire the touch screen even joins the party of triggering touches in the right upper corner... Why the fuck ever.
Just ordered a pixel 3a, your days are counted fucking piece of trash!
Had to order the new one to a mailbox in germany though, as google doesn't ship them to switzerland (and the few retailers who import them charge like 130 bucks more, so paying the 5€ pickup fee will be a lot cheaper...)6
... worst drunk coding experience?
none. or to be more precise, all of the three of them I had. I can't code drunk, i hate doing it, i hatw even thinking about doing it when drunk.
so after those initial three attempts i don't try to do it again, ever.
BUT, best coding experience while high?
ALL OF THEM.
some of the best pieces of code I wrote i did when I was high. my mind goes into overdrive at those times, and my thinking is not lines/threads of thought, but TREES of thought, branching and branching, all nodes of each layer of the tree coming to me AT ONCE, one packet == whole layer across all of the branches.
and the best was when one day, in about 14 hour marathon of coding while high, i wrote from scratch a whole vertical slice of my AI system that i've been toying around in my head for several years prior, and I had all of the high-level concepts ALMOST down, but could never specify them into concrete implementations.
and I do mean MY ai system, my own design, from the ground up, mixing principles of neural networks and neuropsychology/human brain that I still haven't seen even mentioned anywhere.
autonomous game ai which percieves and explores its environment and tools within it via code reflection, remembers and learns, uses tools, makes decisions for itself for its own well-being.
in the end, i had a testbed with person, zombie and shotgun.
all they had pre-defined in their brains were concepts of hunger and health. nothing more.
upon launching it, zombie realized it wants to feed, approached oblivious person, and started eating it.
at which point, purely out of how the system worked, person realized: "this hurts, the hurt is caused by zombie, therefore i hate zombie, therefore i want to hurt it", then looked around, saw the shotgun, inspected its class by reflection, realized "this can hurt stuff", picked the shotgun up, and shot the zombie.
remembered all of that, and upon seeing another zombie, shot it immediately.
it was a complete system, all it needed to become full-fledged thing was adding more concepts and usable objects, and it would automatically be able to create complex multi-stage, multi-element plans to achieve its goals/needs/wants and execute them. and the system was designed in such a way that by just adding a dictionary of natural language words for the concept objects on top of it, it should have been able to generate (crude but functional) english sentences to "talk" about its memories, explain what happened when, how it reacted, what it did and why, just by exploring the memory graph the same way as when it was doing its decision process... and by reversing the function, it should have been able to recieve (crude) english sentences that would make it learn what happened somewhere else in the gameworld to someone else, how to use stuff and tell it what to do, as in, actually transfer actual actionable usable knowledge to it...
it felt amazing to code for 14 hours straight, with no testruns during that, run it for the first time after those 14 hours, and see that happen.
and it did, i swear! while i was coding, i was routinely just realizing typos and mistakes i did 5-20 minutes ago, 4 files/classes ago! the kind you (and i) usually notice only when you try to run the thing and it bugs out.
it was a transcendental experience.
and then, two days later, i don't remember anymore what happened, but i lost all of that code.
and since then, i never mustered enough strength and resolve to try and write the whole thing again.
... that was like 4 years ago.
i hope that miracle will happen again one day...3
This is just funny more then anything 😂
This guy has been fucking up non stop!
He did something incredible, we gave him precise EXACT instructions you couldn’t mistake them
What does he do? Everything wrong.
Granted what he does, works, but... it will take me hours to do what I want to do with the data, if he did it the right way, minutes!
All I wanted was all the active products for this company and their links on the site. He creates an export I can convert to google xml shopping.
What does he do? create over a 100 export buttons one for each supplier so it’s right but it’s all products for that supplier in one file.
So I can do my bit if I just combine 100 files together 😂
It’s funny because there’s already an export that does the exact thing we want just without all the right fields. This is what we asked.
He just needed to duplicate that and add more fields 😂 we think he’s doing it on purpose to be a dick 😂 no one can be that dumb.
I’m laughing cause it’s fucking ridiculous. He’s gonna get fired soon, and he knows it.
So here I am with just 4 nights left at my disposal, in which I have to make a Major project worth 10 credits for my college degree and simultaneously prepare for my oncoming exams... You might think what was I doing all these days then!
Well did I mention I was busy contributing to Open source community (mozilla to be precise) which I enjoyed doing more than I would like to cram things up for my exams and do major project which my teachers expect to be an out of the box idea.
F@#$! Education system1
Computer games is always been a on a great demand. As demand increases, production also increases. Gaming industry has been on a rise since the 19th century. The first computer game "Space Wars" in 1962 gained a large success. Since then, the evolution in the gaming industry is thrilling. Currently, we have access to many immersive games. With the introduction of AR and VR, the gaming industry is going to take a great burst in business. Don't you believe after decade the games would be so advanced that it would be so much life like. According to the predictions, after a hundred years, games would be vastly different from what we play today, realistic feature would be a sidekick for them. A time will come when the games would reach a singularity where the characters would have consciousness. Isn't that like our real world, as if we are the characters in a advanced game of some advanced beings. What if it is true? Scientists are doing a intensive research on this field to find a clue, whether we are in a game or not. This is the so called "Simulation Theory". Some clues in relation to this would be worth noting. The flower are following a series to have their petals. To be precise Fibonacci series is the base to the no of petals in a flower. (Fibonacci Series: 1 1 2 3 5 8 13 21 34 55.....) Flowers would either have 3 or 5 or 8 petals, but no flower is having a number of petal which is not following this series. Isn't it interesting, there is no brain in flower, even then how could a flower decide, how many petals it will contain? Sometimes, it feels like there is some kind of computer code is responsible for this. We will discuss about it furthur.16
[Long rant about one of the worst school project I got]
I just saw that post about Lego coding, and it reminds me a project we had to do for high school.
The project was about a robot that will do volleyball services. My group decided with me that I should go on programming the robot since it was my idea to pick that subject to work on. So I started to investigate the robot and the programming software.
This was one of the worst thing si could get. For some reason I didn't find any tutorial about how to program the robot, so I had to test it out. When you don't want to break the robot, that's clearly not the best thing to do.
So what about the teachers? We had 3. Two told me they don't know stuff about this, and one MIGHT know stuff but not how to use the software. Great...
Plus I add that we were asking a teacher some help, being desperate, and literally, he came, made a joke about "how long he didn't play with Lego toys", laughed at his own joke and left. Thank you, that was really helpful while I was worrying about the project that will help us getting my degree, clearly helped us.
So I managed to do something really basic, where you input the direction for the aim with the arrows on the robot, and central button was for shooting. Basically basic stuff. Even not optimal because the robot hit its own screen but a weaker throw wasn't working, so we had to put some protection over the screen and the arm.
Another group of another class were working on the same subject, so we visited them one day to see their stuff.
They made a joystick that was fully operational, with analogic direction input, precise aiming and shooting stuff. The best way to make myself doubt about my stuff.
So we did the presentation and for whatever reason, the other class (not only the other group) got bad reviews of their projects, made by my famous joking teacher, and we got a good review. Didn't understand, but whatever.
So did I learn stuff?
Absolutely not. It was one of the worst pain in the ass to learn the programming syntax and stuff, and when I graduated, I forgot anything concerning programming stuff, my engineering school did all the stuff.
This is some experience you don't forget, the one that don't make yourself grow at all but the effort is real.1
After working for a startup for 70 hours a week that taught me everything. The place was fun but lacked all the processes. But the boss eas awesome and taught me a shit a loads.
Things started geeting veryvslow so the start up is on lause right now. Anyhow... I ended up finding a job in a really undynamic city where i live where a prettysucesful and growing company just moved to.
Scrum on point， every one is cool， tasks are well established， git processes are freaking awesome and i could go on and on. 2nd week in i thank my old boss for being so precise and annoying on some very specific things because im rocking my first real it job thanks to him.
It feels good ;)
I used to like apples Autocorrect. I use the english and german keyboard.
but since my main language is english and I only write german when chatting with my family, sometimes I'm too lazy to switch keyboards.
Now the german and english corrections kinda got messed up.
it started to correct my intentions like:
Such - Sich
Nein - Nine
Dich - Dick
Gut - But
Fuck - Duck (don't know where that came from)
which can lead to unfortunate sentences.
So I decided to disable auto correct about a week ago.
What I realized is.. it's fucking impossible to type precise on a fucking smartphone without it.
even this rant took me about 10min to write..5
Meditation. Or Awareness Meditation to be precise. It enables me to regain control over my mind, because I get distracted really fast. It really helps sorting things out, taking a step back and getting an overview where I actually am and if what I'm doing right now is actually relevant/has priority. I mostly find that it's not, so I have to return to the important stuff.
For those interested: meditation sounds weird, even obvious at first or you just don't get what's it all about. You actually have to practice meditation for a long time and study the concepts until you start to understand what all these phrases and talking means. Behind them lies great wisdom/huge amount of concepts which is easily underestimated. So don't be frustrated too much if you don't feel it working right away. Be assured I've been there too. Also don't start with meditations like 'just stop thinking or think nothing' because in my opinion this is highly complex shit and frustrating at first. Start with awareness or breathing meditations or even get an app to support your daily habit.1
!rant but tips
TL;DR consistent commitments form a habit.
I didn't write any code or do any major tasks past 5 days. Rest at home 2 days and went to short trip for remaining. Answered a few business calls. Made few important calls. Didn't bring my laptop with me and used my gf's one for less than 2 hours. (Majority of that 2 hours was spent on changing her W10 Japanese display language into English.)
This morning I found it hard to gain the productivity and concentration I had past few months. I thought I have lost it and got back to my old lazy 🐒 self.
Couldn't able to touch, well didn't have the mood to touch to be precise, my major tasks. I did my best to sit at my desk and finish minor small tasks that I can find the whole morning. That's the best I could do and probably the wise one I did.
After lunch time around 2pm, I gained my concentration back. I worked on my major tasks till 7pm. And now going home happy.
So my "productivity-is-a-lot-like-intercourse" analogy belief became stronger. As long as I commit to my desk and keep my work routine, I won't be losing my concentration and productivity for a long period.
"Life is conversational. Web design should be the same way. On the web, you’re talking to someone you’ve probably never met – so it’s important to be clear and precise. Thus, well structured navigation and content organization goes hand in hand with having a good conversation." - Chikezie Ejiasi1
Was so angry... Was all the day wondering why my rest method wasnt outputting a certain property (in null to be more precise)... When almost 5 hours has passed, I realized it was due the @JsonIgnore annotation... soooo angryyyyy jaja
I guess I am not the only one who do not know why hes/her code runs. Today I was preparing a private API for our project and a part of it was not working for (IMHO) no reason. I was really upset, because I already put more then an hour work in a 10 minute task.
It was 9:30 PM, I came like 12 hours ago, so I knew I can do only one thing to erase my mind for a second: Clean my keyboard. I tried to be really precise and everything, because my finger can be really greasy now or then.
After a good 10 minutes I looked at my screen and I realised, that I managed to forget to remove the keyboard's cable, so my screen looked like someone tried to escape from Vim.
But! During the cleaning I also runned the code again somehow and it fucking worked. I am sitting here, cannot believe what I see. I see no changes whatsoever, so this might be like a friday gift from the universe.
Now, I can finally work on my own project...4
This is yet another rant about php.
But I'll put my hands on first: I'm less than a junior and I'm looking for a backend language to learn.
So far I've been looking at php with Symfony because it's been used where I work.
Is it my impression or Symfony somehow overcomplicates everything? Like I don't know, for any stupid thing I get stucked (like yesterday, spent two hours on a circular reference problem with serialization).
Also, I don't like it's documentation. I am a book person, meaning that I need pages of text explaining how the framework (or whatever) works in a precise order.
Symfony's docs are like a graph: you often have no idea where you are or "what comes next".
Also, I feel like every page makes you just copy-paste everything without explaining very much what's happening under the hood.
I know there is a cookbook, but it's pretty outdated (like it's at version 3 or 2.7, I don't remember).
Is it just me? Do other Symfony developers experienced the same?10
For fuck sake I hate this day already and its only 10am. I had to go to an exam. I live 200km away from my uni (only have a few classes, so collage is not worth it). I woke up at 4.30 to arrive in time. My car was wrecked 2 weeks ago so I've asked for my mother's car and guess what?... That fucker died on the road. Had to call my dad at 5.50 AM.
I've managed to arrive 7.58 at the classroom, and that retarded dimwit dared to tell me that next time I should hurry (exam started at 8), because they'd already started.
During the exam while I was literally sweating blood that same asshole comes to me that his pocket device detected data traffic coming from where I sit and whether I have a device switched on. It was me though, a devRant notification to be precise. Luckily he just asked me to switch it of, but that 2 minutes of fuckery could cost my pass grade.
Now I am heading back for the broken car to be towed back home. What a wonder-fucking-ful day I have today. And it is still a question, whether I will be able to go to work tomorrow or not.
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.
How on earth are you supposed to deliver a precise estimate of assignments, when your client wants the assignments estimated in parts, but youre not able to split it into parts because its a chain of assignments, that cant be split, like if one Thing succeeds then its possible to move on to next part? So many unknowns because you have to set time aside for unknown code behavior.. Sigh..1
Relatively often the OpenLDAP server (slapd) behaves a bit strange.
While it is little bit slow (I didn't do a benchmark but Active Directory seemed to be a bit faster but has other quirks is Windows only) with a small amount of users it's fine. slapd is the reference implementation of the LDAP protocol and I didn't expect it to be much better.
Some years ago slapd migrated to a different configuration style - instead of a configuration file and a required restart after every change made, it now uses an additional database for "live" configuration which also allows the deployment of multiple servers with the same configuration (I guess this is nice for larger setups). Many documentations online do not reflect the new configuration and so using the new configuration style requires some knowledge of LDAP itself.
It is possible to revert to the old file based method but the possibility might be removed by any future version - and restarts may take a little bit longer. So I guess, don't do that?
To access the configuration over the network (only using the command line on the server to edit the configuration is sometimes a bit... annoying) an additional internal user has to be created in the configuration database (while working on the local machine as root you are authenticated over a unix domain socket). I mean, I had to creat an administration user during the installation of the service but apparently this only for the main database...
The password in the configuration can be hashed as usual - but strangely it does only accept hashes of some passwords (a hashed version of "123456" is accepted but not hashes of different password, I mean what the...?) so I have to use a single plaintext password... (secure password hashing works for normal user and normal admin accounts).
But even worse are the default logging options: By default (atleast on Debian) the log level is set to DEBUG. Additionally if slapd detects optimization opportunities it writes them to the logs - at least once per connection, if not per query. Together with an application that did alot of connections and queries (this was not intendet and got fixed later) THIS RESULTED IN 32 GB LOG FILES IN ≤ 24 HOURS! - enough to fill up the disk and to crash other services (lessons learned: add more monitoring, monitoring, and monitoring and /var/log should be an extra partition). I mean logging optimization hints is certainly nice - it runs faster now (again, I did not do any benchmarks) - but ther verbosity was way too high.
The worst parts are the error messages: When entering a query string with a syntax errors, slapd returns the error code 80 without any additional text - the documentation reveals SO MUCH BETTER meaning: "other error", THIS IS SO HELPFULL... In the end I was able to find the reason why the input was rejected but in my experience the most error messages are little bit more precise.2
Has anyone had to start undergraduate/transfer studies a little bit late? Need help with CV/Resume.
So, I dropped out of University because I had to move to USA. And now I am applying for University here in Massachusetts. (transfer my studies to be precise)
I have worked since 2014 as a developer (currently working) and I want to know how to structure my CV/Resume for University.
Do I need a simple one just like when I apply for a job, or a detailed one 2-3 pages?
Thinking of applying at Boston University, Northeastern & UMass.
Hi everyone !!
I'm new to coding community and but I learnt c++ in school. But I don't know how to improve on my skills. And what all should I learn to get an intern.
I tried codechef but I don't get it how to improve algos n data structures or any of it... N so much going like learn python or java ..make apps or build web pages .... It gets too much on my plate ...need suggestions how I pursue my self in improving competitive coding and alas build a career in web and Android with backend and front end to be precise a full stack developer .... Griefs apart "happy coding"