My dad found a phone a few weeks ago and asked me what he should do with it. Knowing how much it hurts to lose personal data, I said I could try to find the owner and send it back.

My first attempt was to search through the files on the SD card in order to find an identifying document (CV, bill, address...) but there were only family pictures.

My second attempt was to unlock the phone and check the information about the owner and the accounts linked to it. But for this to be possible adb has to be enabled. Good thing is that that particular brand shows an option for activating adb on the recovery menu.

But then, it's Android Oreo and I haven't found a way to lift the lock pattern. I thought I could bruteforce it over the shell (as I found there could be about 1300 possibilities for 2 to 5 point patterns), but there is the same attempt throttling as on the screen so that would take ages.

Finally, I found the owner in the most "social" way : The phone was displaying the weather for a particular place. It turns out that there are only 3K inhabitants in that city, si I thought that a big enough Facebook group might help me find the owner. So I posted a message on a 500 people FB group dedicated to this city with a selfie of the owner : someone identified her within 20 minutes.

Mission accomplished 😎

BLOCKCHAIN?

Hell yeah

Me: *listening to some random semi-obscure track on spotify, liking it, add it to playlist*

Come home, girlfriend playing the same track. "Yeah I've had that in my playlist for two weeks now". Our accounts are not linked in any way, and I only use Spotify on a PC at work, while my girlfriend only uses it at home.

It might just be coincidence, or us having similar tastes.

But the issue is that it's getting more and more difficult to know whether me and my girl are spiritually linked unique snowflake soulmates who are so perfectly in sync with each other, or whether an algorithm suggestively linked us both that song based on scraped location and behavior data.

And whether it matters. Maybe it matters. I don't know yet.

In twenty years maybe humans will be unsure whether it was a wonderful coincidence bordering on cosmic fate that you ran into your new love, or whether Google purposefully drove you towards the same lunch cafe at a specific time because it calculated that she was the perfect candidate to strengthen your susceptibility to advertisements over the coming decade.

Malicious AI will not come into lives bearing guns.

It will not instantly take all of our jobs and enslave us.

It will just know you better than you know yourself, it will know everyone around you better than you know them, and it will play incredible mind games. It will not be designed with malicious intent, just perfectly execute on top of the malicious systems we already have, and even arise as an emergent property within new systems.

It will rarely be clearly visible, but you will increasingly say to yourself: "That's odd, I was just thinking about that". It will detect depression from a smile, physical attraction from a glance, reliability from patterns in your voice and illness from the bloodflow in your cheeks.

It will not just make our cars autonomous, it will make our lives autonomous. It will protect us, decide for us, keep revenues and human satisfaction in a "balanced maximized" state, it will make everything feel easy, slightly abuse us, and when one of us suddenly crashes at 140 mph into depression, debt or addiction it will prove impossible to know whether the humans or the algorithms were at fault.

I'm incredibly afraid and excited about the coming 10 years.

Although this is gonna sound like bullshit, this happened to me for real. Since that moment I use even more backup services AND I regularly check EVERYTHING.

Had a backup of my important data (still used mainstream services back then) on:

- Hotmail email attachments
- Google Drive
(Both link to another email account).
- A few data backup services
- DVD
- USB
- External HDD.

I wanted to copy some backup data over again:

1. Walk to my staple of HDD's, tried to grab it, somehow missed and knocked the whole fucking pile over. HDD broken.

2. Well fuck, let's go put some of my clothes in the washing machine for clean clothes at study/monday. After this shit being in the washing machine for just a few minutes, I realized my backup USB stick was in one of my pockets, in the washing machine. FUCK. Couldn't stop it so I waited till the end, tried it and well, it wasn't working at all anymore.
Fuck my fucking life slightly right now.

3. *remembers about the backup disc*. I forgot to keep it in its case, very deep scratches and so on, unreadable. FUCKING FUCK.

4. Right, I still have those online services! *tries to login to all of them (including hotmail/gdrive) but forgot the password. Well, let's login to my backup account then (hadn't used that one in years). Account was suspended for some reason.
Started to get really anxious because every online backup service was linked to that email address.
Contacted customer support. They really couldn't restore it because of some issues they weren't allow to tell me. Sorry but I couldn't retain access.

5. Well this is fucked up. Couldn't get into any of the backup/hotmail/gdrive accounts anymore.
I tried contacting their support but never got any replies.

This was the moment I realized I fucked up big fucking time because damn, this stuff at this level hardly happens to anyone.

FUCK.

!(short rant)

Look I understand online privacy is a concern and we should really be very much aware about what data we are giving to whom. But when does it turn from being aware to just being paranoid and a maniac about it.? I mean okay, I know facebook has access to your data including your whatsapp chat (presumably), google listens to your conversations and snoops on your mail and shit, amazon advertises that you must have their spy system (read alexa) install in your homes and numerous other cases. But in the end it really boils down to "everyone wants your data but who do you trust your data with?"

For me, facebook and the so-called social media sites are a strict no-no but I use whatsapp as my primary chating application. I like to use google for my searches because yaa it gives me more accurate search results as compared to ddg because it has my search history. I use gmail as my primary as well as work email because it is convinient and an adv here and there doesnt bother me. Their spam filters, the easy accessibility options, the storage they offer everything is much more convinient for me. I use linux for my work related stuff (obviously) but I play my games on windows. Alexa and such type of products are again a big no-no for me but I regularly shop from amazon and unless I am searching for some weird ass shit (which if you want to, do it in some incognito mode) I am fine with coming across some advs about things I searched for. Sometimes it reminds me of things I need to buy which I might have put off and later on forgot. I have an amazon prime account because prime video has some good shows in there. My primary web browser is chrome because I simply love its developer tools and I now have gotten used to it. So unless chrome is very much hogging on my ram, in which case I switch over to firefox for some of my tabs, I am okay with using chrome. I have a motorola phone with stock android which means all google apps pre-installed. I use hangouts, google keep, google map(cannot live without it now), heck even google photos, but I also deny certain accesses to apps which I find fishy like if you are a game, you should not have access to my gps. I live in India where we have aadhar cards(like the social securtiy number in the USA) where the government has our fingerprints and all our data because every damn thing now needs to be linked with your aadhar otherwise your service will be terminated. Like your mobile number, your investment policies, your income tax, heck even your marraige certificates need to be linked with your aadhar card. Here, I dont have any option but to give in because somehow "its in the interest of the nation". Not surprisingly, this thing recently came to light where you can get your hands on anyone's aadhar details including their fingerprints for just ₹50($1). Fuck that shit.

tl;dr
There are and should be always exceptions when it comes to privacy because when you give the other person your data, it sometimes makes your life much easier. On the other hand, people/services asking for your data with the sole purpose of infilterating into your private life and not providing any usefulness should just be boycotted. It all boils down to till what extent you wish to share your data(ranging from literally installing a spying device in your house to them knowing that I want to understand how spring security works) and how much do you trust the service with your data. Example being, I just shared most of my private data in this rant with a group of unknown people and I am okay with it, because I know I can trust dev rant with my posts(unlike facebook).

So WhatsApp introduced number linking (with facebook) to its users a while ago.

I know a lot of people who opted out (this option was introduced by facebook because of european laws) because they didn't want their number linked. They said that it infringed their privacy (or however the fuck you spell that).

A few months later we found out that that checkbox thingy didn't do anything and facebook would link everything anyways. They got a 10 million euro fine I thought.

I found one thingy very disturbing though. Told some friends about the ability to opt out (when the scandal hadn't happened yet) and they did right away.

Then later on the scandal became public.

Told them about that.

'Oh but I don't have anything to hide, it's alright!'.

Jesus fucking christ how deep can people sink?! First you say that you opt out because you don't want your fucking data linked and when the fucking scandal gets public you act like everything is fine because 'you have nothing to hide anyways'.

Fucking hell.

Root gets ignored.

I've been working on this monster ticket for a week and a half now (five days plus other tickets). It involves removing all foreign keys from mass assignment (create, update, save, ...), which breaks 1780 specs.

For those of you who don't know, this is part of how rails works. If you create a Page object, you specify the book_id of its parent Book so they're linked. (If you don't, they're orphans.) Example: `Page.create(text: params[:text], book_id: params[:book_id], ...)` or more simply: `Page.create(params)`

Obviously removing the ability to do this is problematic. The "solution" is to create the object without the book_id, save it, then set the book_id and save it again. Two roundtrips. bad.

I came up with a solution early last week that, while it doesn't resolve the security warnings, it does fix the actual security issue: whitelisting what params users are allowed to send, and validating them. (StrongParams + validation). I had a 1:1 with my boss today about this ticket, and I told him about that solution. He sort of hand-waved it away and said it wouldn't work because <lots of unrelated things>. huh.

He worked through a failed spec to see what the ticket was about, and eventually (20 minutes later) ran into the same issues Idid, and said "there's no way around this" (meaning what security wants won't actually help).

I remembered that Ruby has a `taint` state tracking, and realized I could use that to write a super elegant drop-in solution: some Rack middleware or a StrongParams monkeypatch to mark all foreign keys from user-input as tainted (so devs can validate and un-taint them), and also monkeypatch ACtiveRecord's create/save/update/etc. to raise an exception when seeing tainted data. I brought this up, and he searched for it. we discovered someone had already build this (not surprising), but also that Ruby2.7 deprecates the `taint` mechanism literally "because nobody uses it." joy. Boss also somehow thought I came up with it because I saw the other person's implementation, despite us searching for it because I brought it up? 🤨

Foregoing that, we looked up more possibilities, and he saw the whitelist+validation pattern quite a few more times, which he quickly dimissed as bad, and eventually decided that we "need to noodle on it for awhile" and come up with something else.

Shortly (seriously 3-5 minutes) after the call, he said that the StrongParams (whitelist) plus validation makes the most sense and is the approach we should use.

ffs.
I came up with that last week and he said no.
I brought it up multiple times during our call and he said it was bad or simply talked over me. He saw lots of examples in the wild and said it was bad. I came up with a better, more elegant solution, and he credited someone else. then he decided after the call that the StrongParams idea he came up with (?!) was better.

jfc i'm getting pissy again.

I've found and fixed any kind of "bad bug" I can think of over my career from allowing negative financial transfers to weird platform specific behaviour, here are a few of the more interesting ones that come to mind...

#1 - Most expensive lesson learned

Almost 10 years ago (while learning to code) I wrote a loyalty card system that ended up going national. Fast forward 2 years and by some miracle the system still worked and had services running on 500+ POS servers in large retail stores uploading thousands of transactions each second - due to this increased traffic to stay ahead of any trouble we decided to add a loadbalancer to our backend.

This was simply a matter of re-assigning the IP and would cause 10-15 minutes of downtime (for the first time ever), we made the switch and everything seemed perfect. Too perfect...

After 10 minutes every phone in the office started going beserk - calls where coming in about store servers irreparably crashing all over the country taking all the tills offline and forcing them to close doors midday. It was bad and we couldn't conceive how it could possibly be us or our software to blame.

Turns out we made the local service write any web service errors to a log file upon failure for debugging purposes before retrying - a perfectly sensible thing to do if I hadn't forgotten to check the size of or clear the log file. In about 15 minutes of downtime each stores error log proceeded to grow and consume every available byte of HD space before crashing windows.

#2 - Hardest to find

This was a true "Nessie" bug.. We had a single codebase powering a few hundred sites. Every now and then at some point the web server would spontaneously die and vommit a bunch of sql statements and sensitive data back to the user causing huge concern but I could never remotely replicate the behaviour - until 4 years later it happened to one of our support staff and I could pull out their network & session info.

Turns out years back when the server was first setup each domain was added as an individual "Site" on IIS but shared the same root directory and hence the same session path. It would have remained unnoticed if we had not grown but as our traffic increased ever so often 2 users of different sites would end up sharing a session id causing the server to promptly implode on itself.

#3 - Most elegant fix

Same bastard IIS server as #2. Codebase was the most unsecure unstable travesty I've ever worked with - sql injection vuns in EVERY URL, sql statements stored in COOKIES... this thing was irreparably fucked up but had to stay online until it could be replaced. Basically every other day it got hit by bots ended up sending bluepill spam or mining shitcoin and I would simply delete the instance and recreate it in a semi un-compromised state which was an acceptable solution for the business for uptime... until we we're DDOS'ed for 5 days straight.

My hands were tied and there was no way to mitigate it except for stopping individual sites as they came under attack and starting them after it subsided... (for some reason they seemed to be targeting by domain instead of ip). After 3 days of doing this manually I was given the go ahead to use any resources necessary to make it stop and especially since it was IIS6 I had no fucking clue where to start.

So I stuck to what I knew and deployed a $5 vm running an Nginx reverse proxy with heavy caching and rate limiting linked to a custom fail2ban plugin in in front of the insecure server. The attacks died instantly, the server sped up 10x and was never compromised by bots again (presumably since they got back a linux user agent). To this day I marvel at this miracle $5 fix.

As much as I love opensource I hate really hate some of its actvie community members (read this as "freetards" <-- see urbandictonary). As a .Net + web devloper with minimal C experience (I just started learning it) and literally no Python experience its not really easy to contribute for me to many (most) opensource software for linux. I am using some <unnamed software> and I found a <critical bug>, it was easy to reproduce and I wrote for list of possible solutions, found it in a code and linked and basically wrote a docummentation longer than any other I ever wrote for every single project I did ever, combined. This <software> was critical for my server and since owner of github repo and few other people there were really active, I hoped that this bug with pretty good documentation will be solved fast, I went to my bed with a heroic feeling of an open source community contributor that helped saving world. I was horribly wrong. Tomorrow, I got 3 passively agressive responses from owner and other 2 freetards that summed up said <other1>:"oh thats nice, fix i yourself and commit it", <other2>:"have a sex with yourself" in a nice way, and <owner>: "fix my softwate and create mrege request". After replying that I have no experience my Python skills are not on a level requied for such an action, he messaged me on twitter I have linked to my GitHub profile saying even less nicely that I am a "retarded c*nt" and that I should learn Python and fix it myself. This makes me stay with my Windows based Server for some time now, fuck this. I googled his github nickname and guess what. Our main freetard is admin on an <unnamed linux forum> and mebmber of many other "computer help" with literally half of his posts just slightly toxic posts about how everyone should use linux and how supreme it is ober anything other, the other hals was crying why linux has only 1% of market share. Oh boi I am not sure why but ITS MAYBE BECAUSE OF FREETARDS LIKE YOU.
And the funnies thing is, hes not only freetard, he is just fullstack retard. One of his posts is "helping" to some <noob windows user> installing Linux. tl:dr for this las part: Freetard basically wiped all data of that <noob>.

PS: Bless everyone who do not respond "oh nice, now you can do it yourself"

Just because you can learn HTML in a day doesn’t mean that you don’t need a degree.

Did you know that your browser, HTML, CSS, Javascript, and even your operating system use linked lists, binary trees, hash tables, and other so-called “useless” data structures?

It’s important to understand the roots and fundamentals of computer science even if you won’t use that knowledge day to day.

It changes your perspective on programming once you learn what actually goes on under the hood, and makes you think twice about the impact of what you write.

It’s relatively easy to get a programming job without a degree nowadays, but it often leads to web developers claiming that degrees aren’t important to their web apps.

There is much more than just the web to computer science, and that’s something to always keep in mind.

Thanks to Devrant I've learned about rubber duck debugging. Never heard of it before! It reminds me of a story many moons ago when I worked for a certain multinational company as a business analyst. The company brought in some consultants who basically stole the work my team was already doing on a big project (a horrendous series of spreadsheets linked to data coming from the core systems) and sold it back to the company for an insane amount of money as their idea.

When they launched the new product, the team I was in was asked to test and review it. It took my colleague ten seconds to bring the whole thing to its knees and trigger a corrupt data export back into the core systems. Bearing in mind this external company somehow managed to charge tens of thousands of pounds. So what did my colleague do? Hack the system? Some kind of complicated sabotage? Nope. He typed "FISH" into one of the spreadsheet cells! Thus the FISH test was born.

That day I learned several things: it's easy to break things with a fish; the importance of validating your input; and the satisfaction of showing up the smug bastards who stole your ideas and work.

I am much too tired to go into details, probably because I left the office at 11:15pm, but I finally finished a feature. It doesn't even sound like a particularly large or complicated feature. It sounds like a simple, 1-2 day feature until you look at it closely.

It took me an entire fucking week. and all the while I was coaching a junior dev who had just picked up Rails and was building something very similar.

It's the model, controller, and UI for creating a parent object along with 0-n child objects, with default children suggestions, a fancy ui including the ability to dynamically add/remove children via buttons. and have the entire happy family save nicely and atomically on the backend. Plus a detailed-but-simple listing for non-technicals including some absolutely nontrivial css acrobatics.

After getting about 90% of everything built and working and beautiful, I learned that Rails does quite a bit of this for you, through `accepts_nested_params_for :collection`. But that requires very specific form input namespacing, and building that out correctly is flipping difficult. It's not like I could find good examples anywhere, either. I looked for hours. I finally found a rails tutorial vide linked from a comment on a SO answer from five years ago, and mashed its oversimplified and dated examples with the newer documentation, and worked around the issues that of course arose from that disasterous paring.

like.
I needed to store a template of the child object markup somewhere, yeah? The video had me trying to store all of the markup in a `data-fields=" "` attrib. wth? I tried storing it as a string and injecting it into javascript, but that didn't work either. parsing errors! yay! good job, you two.

So I ended up storing the markup (rendered from a rails partial) in an html comment of all things, and pulling the markup out of the comment and gsubbing its IDs on document load. This has the annoying effect of preventing me from using html comments in that partial (not that i really use them anyway, but.)

Just.
Every step of the way on building this was another mountain climb.
* singular vs plural naming and routing, and named routes. and dealing with issues arising from existing incorrect pluralization.
* reverse polymorphic relation (child -> x parent)
* The testing suite is incompatible with the new rails6. There is no fix. None. I checked. Nope. Not happening.
* Rails6 randomly and constantly crashes and/or caches random things (including arbitrary code changes) in development mode (and only development mode) when working with multiple databases.
* nested form builders
* styling a fucking checkbox
* Making that checkbox (rather, its label and container div) into a sexy animated slider
* passing data and locals to and between partials
* misleading documentation
* building the partials to be self-contained and reusable
* coercing form builders into namespacing nested html inputs the way Rails expects
* input namespacing redux, now with nested form builders too!
* Figuring out how to generate markup for an empty child when I'm no longer rendering the children myself
* Figuring out where the fuck to put the blank child template markup so it's accessible, has the right namespacing, and is not submitted with everything else
* Figuring out how the fuck to read an html comment with JS
* nested strong params
* nested strong params
* nested fucking strong params
* caching parsed children's data on parent when the whole thing is bloody atomic.
* Converting datetimes from/to milliseconds on save/load
* CSS and bootstrap collisions
* CSS and bootstrap stupidity
* Reinventing the entire multi-child / nested params / atomic creating/updating/deleting feature on my own before discovering Rails can do that for you.

Just.
I am so glad it's working.
I don't even feel relieved. I just feel exhausted.

But it's done.
finally.

and it's done well. It's all self-contained and reusable, it's easy to read, has separate styling and reusable partials, etc. It's a two line copy/paste drop-in for any other model that needs it. Two lines and it just works, and even tells you if you screwed up.

I'm incredibly proud of everything that went into this.
But mostly I'm just incredibly tired.

Time for some well-deserved sleep.

Watch out for these fucking bug bounty idiots.

Some time back I got an email from one shortly after making a website live. Didn't find anything major and just ran a simple tool that can suggest security improvements simply loading the landing page for the site.

Might be useful for some people but not so much for me.

It's the same kind of security tool you can search for, run it and it mostly just checks things like HTTP headers. A harmless surface test. Was nice, polite and didn't demand anything but linked to their profile where you can give them some rep on a system that gamifies security bug hunting.

It's rendering services without being asked like when someone washes your windscreen while stopped at traffic but no demands and no real harm done. Spammed.

I had another one recently though that was a total disgrace.

"I'm a web security Analyst. My Job is to do penetration testing in websites to make them secure."
"While testing your site I found some critical vulnerabilities (bugs) in your site which need to be mitigated."
"If you have a bug bounty program, kindly let me know where I should report those issues."
"Waiting for response."

It immediately stands out that this person is asking for pay before disclosing vulnerabilities but this ends up being stupid on so many other levels.

The second thing that stands out is that he says he's doing a penetration test. This is illegal in most major countries. Even attempting to penetrate a system without consent is illegal.

In many cases if it's trivial or safe no harm no foul but in this case I take a look at what he's sending and he's really trying to hack the site. Sending all kinds of junk data and sending things to try to inject that if they did get through could cause damage or provide sensitive data such as trying SQL injects to get user data.

It doesn't matter the intent it's breaking criminal law and when there's the potential for damages that's serious.

It cannot be understated how unprofessional this is. Irrespective of intent, being a self proclaimed "whitehat" or "ethical hacker" if they test this on a site and some of the commands they sent my way had worked then that would have been a data breach.

These weren't commands to see if something was possible, they were commands to extract data. If some random person from Pakistan extracts sensitive data then that's a breach that has to be reported and disclosed to users with the potential for fines and other consequences.

The sad thing is looking at the logs he's doing it all manually. Copying and pasting extremely specific snippets into all the input boxes of hacked with nothing to do with the stack in use. He can't get that many hits that way.

When will I fuckin learn that
a) customers lie
b) customers are sloppy
c) customers are wrong
d) customers do not do their work (properly)
e) customers want us to do their (dirty) work
f) possibly all of the freakinly above?! + khm....

They will fuckin aaaalwaaaays say sth is not working after the update..
And I will alwaaaays assume I fucked up something..even if I didn't touch that part of the code/data..
And almost aaaaalways it turns out that the bug they complain about is how the system worked (or didn't work) before the update and/or some fuckup from their side..

Anyhow, I rushed over, grabbed the files went testing in dev..wtf, output is different, mine is ok, theirs is..wtf is that shit?!

Transfer newly built dll to test..same shit as on prod..wtf?! How?!

I assumed they have thing A correctly linked to thing B.. ofc thing A was linked to thing C in their case and in another case (our test) to correct thing B..
I got chillies when grabbing files, that
I should have tripple checked that they didn't fuck up something on the link part, but I just assumed they know what they were doing & that they checked they linked correct files with correct content already, before being pissy that the update fucked up things.. riiiight!! :/

I wanted to find solutions to this fuckup asap so I disregarded my gut feeling..yet again!! Fuuuck!
I've spent too much time trying to find ways to fix a bug that wasn't even a real bug to begin with.. :/

Fuuuuuck!!

So yeah, always treat the customers like they are 3yrs old & have no clue what they are doing & check exactly wtf they were indeed trying to do..it will save you time & nerves..

And note to self: reread this shit daily!! And imprint it in your brain that everything is not always your fault!!

If you're currently in college and wish to get placed in a major tech giant like Amazon or Facebook:

Don't learn React.js, instead learn Linked lists.

Don't learn Flutter, instead learn Binary search trees.

Don't learn how to perform secure Authorization with JWTs, instead learn how to recursively reverse a singly linked list.

Don't learn how to build scalable and fault tolerant web servers, instead learn how to optimally inverse a binary search tree.

These big tech companies don't really care what real world development technologies you've mastered. Your competence in competitive programming and data structures is all that matters.

The system is screwed. Or atleast I am.

When the guy with his master's who's job you were told you weren't qualified for performed the following all in one query:
1. A massive many to many join on a 4 million row table.....to itself on in inner query through a linked server.
2. Decides to try and join this massive inner query (see step 1) to another table on a second many to many join.
3. Writes a function for month. Yes instead of month(literallyadate)

Then this guy emails me to ask if I can optimize it because we yelled at him for trying to insert 216 GB of data into a table (again on a massive many to many joined disaster). We told him if a query was taking more than 40 minutes we needed to see it.

I regret saying that now...should have just bought more space ;)

Our employee management system, for some reason, stored Testlists (I work in QA) linked to the user accounts that created them. Now after an colleague who worked there for five years left pretty much all our data was suddenly down the drain and nobody backed the fricking server up because, hey, whats the fun in that. Now all the tests need to be rewritten and other than the whole gui test automation of our product, maintenance of the same for another product, manually testing dev issues and training my new code monkeys to frickin not commit non working code to the trunk I have now also "Make a better Employee management system" (roughly translated those are the specs I've got) on my plate... I can remember back to the care free days of just before my boss asked me if I wanted to try to automate some of the test cases... How did I ever survive this paralyzing tranquility. Ha, surprise.
!rant, I fucking love the stress and juggling a shit ton of problems at the same time keeps ine on edge.

An intern approached me for help in one of their past exam questions. They said they had already turned in the exam but just wanted to know the answer. The question was not that hard and I had a bit of time to kill so I helped them.

Me: So, to make it O(n), you have to make it a double linked list, and keep a tail.

Them: But the problem requires us to solve it with a single liked list.

Me: You can just iterate it at the end to make it single-linked again. That costs O(n), so the solution is still O(n).

Them: Oh yeah right. I don't think we even need a tail though, we could just have a variable pointing to the last link.

Me: ...which is called a tail.

Trying to switch my job. Applied for a well known company. Gave an interview today. I don't fucking get the obsession of these developer recruiters so fixated on data structures and algorithms. I know it's a massive part of computer science but guess there is no fucking room left to innovate in there. There are legitimate researcher teams working for implementation of these barebones inside system foundations. No general software developer gives a fuck about this piece of shit discipline of study. You wanna know why they propagate this as the panacea to test people because it's fucking easy. Give a project to somebody as interview procedure, it'll take time to bring out an interesting problem and an interesting solution to that. Sorry to say but all these data structure enthusiasts are nothing better than board game enthusiasts.

Also why can't you refer existing solutions to create your solution. I've seen some good problems which actually require you to think. But again those are heavy and can't be tested so you're left with reversing a fucking linked list with O(1) auxillary space. Fuck me ig.

Moreover, what the fuck is wrong with the moral policing internet crowd. Its so sad. I've hardly seen anybody rant about this piece of shit system put in place to push the absolute dead-end nutcases up the ladder. Every other search for it returns a Quora link with some Indian guy complaining about his interviews and in the comments you have the same scholars sitting in their data structure throne imparting knowledge about how data structure holds the fabric of reality together.

I don't hate data structures and algorithms as a subject. It is cool and quite extensive but once you try to make that as a metric of all the knowledge in the world, you've lost my drift. Maybe I'm just angry with the state of things. Maybe I'm just angry with token Quora crowd.

How many of you use the right data structures for the right situations?

As seasoned programmer and mentor Simon Allardice said: "I've met all sorts of programmers, but where the self-taught programmers fell short was knowing when to use the right data structure for the right situation. There are Arrays, ArrayLists, Sets, HashSets, singly linked Lists, doubly linked Lists, Stacks, Queues, Red-Black trees, Binary trees,.. and what the novice programmer does wrong is only use ArrayList for everything".

Most uni students don't have this problem though, for Data Structures is freshman year material. It's dry, complicated and a difficult to pass course, but it's crucial as a toolset for the programmer.

What's important is knowing what data structures are good in what situations and knowing their strengths and weaknesses. If you use an ArrayList to traverse and work with millions of records, it will be ten-fold as inefficient as using a Set. And so on, and so on.

Major rant incoming. Before I start ranting I’ll say that I totally respect my professor’s past. He worked on some really impressive major developments for the military and other companies a long time ago. Was made an engineering fellow at Raytheon for some GPS software he developed (or lead a team on I should say) and ended up dropping fellowship because of his health. But I’m FUCKING sick of it. So fucking fed up with my professor. This class is “Data Structures in C++” and keep in mind that I’ve been programming in C++ for almost 10 years with it being my primary and first language in OOP.

Throughout this entire class, the teacher has been making huge mistakes by saying things that aren’t right or just simply not knowing how to teach such as telling the students that “int& varOne = varTwo” was an address getting put into a variable until I corrected him about it being a reference and he proceeded to skip all reference slides or steps through sorting algorithms that are wrong or he doesn’t remember how to do it and saying, “So then it gets to this part and....it uh....does that and gets this value and so that’s how you do it *doesnt do rest of it and skips slide*”.

First presentation I did on doubly linked lists. I decided to go above and beyond and write my own code that had a menu to add, insert at position n, delete, print, etc for a doubly linked list. When I go to pull out my code he tells me that I didn’t say anything about a doubly linked list’s tail and head nodes each have a pointer pointing to null and so I was getting docked points. I told him I did actually say it and another classmate spoke up and said “Ya” and he cuts off saying, “No you didn’t”. To which I started to say I’ll show you my slides but he cut me off mid sentence and just yelled, “Nope!”. He docked me 20% and gave me a B- because of that. I had 1 slide where I had a bullet point mentioning it and 2 slides with visual models showing that the head node’s previousNode* and the tail node’s nextNode* pointed to null.

Another classmate that’s never coded in his life had screenshots of code from online (literally all his slides were a screenshot of the next part of code until it finished implementing a binary search tree) and literally read the code line by line, “class node, node pointer node, ......for int i equals zero, i is less than tree dot length er length of tree that is, um i plus plus.....”
Professor yelled at him like 4 times about reading directly from slide and not saying what the code does and he would reply with, “Yes sir” and then continue to read again because there was nothing else he could do.

Ya, he got the same grade as me.

Today I had my second and final presentation. I did it on “Separate Chaining”, a hashing collision resolution. This time I said fuck writing my own code, he didn’t give two shits last time when everyone else just screenshot online example code but me so I decided I’d focus on the PowerPoint and amp it up with animations on models I made with the shapes in PowerPoint. Get 2 slides in and he goes,
Prof: Stop! Go back one slide.
Me: Uh alright, *click*
(Slide showing the 3 collision resolutions: Open Addressing, Separate Chaining, and Re-Hashing)
Prof: Aren’t you forgetting something?
Me: ....Not that I know of sir
Prof: I see Open addressing, also called Open Hashing, but where’s Closed Hashing?
Me: I believe that’s what Seperate Chaining is sir
Prof: No
Me: I’m pretty sure it is
*Class nods and agrees*
Prof: Oh never mind, I didn’t see it right

Get another 4 slides in before:
Prof: Stop! Go back one slide
Me: .......alright *click*
(Professor loses train of thought? Doesn’t mention anything about this slide)
Prof: I er....um, I don’t understand why you decided not to mention the other, er, other types of Chaining. I thought you were going to back on that slide with all the squares (model of hash table with animations moving things around to visualize inserting a value with a collision that I spent hours on) but you didn’t.
(I haven’t finished the second half of my presentation yet you fuck! What if I had it there?)
Me: I never saw anything on any other types of Chaining professor
Prof: I’m pretty sure there’s one that I think combines Open Addressing and Separate Chaining
Me: That doesn’t make sense sir. *explanation why* I did a lot of research and I never saw any other.
Prof: There are, you should have included them.
(I check after I finish. Google comes up with no other Chaining collision resolution)

He docks me 20% and gives me a B- AGAIN! Both presentation grades have feedback saying, “MrCush, I won’t go into the issues we discussed but overall not bad”.

Thanks for being so specific on a whole 20% deduction prick! Oh wait, is it because you don’t have specifics?
Bye 3.8 GPA

Is it me or does he have something against me?

Just found the most embarrassing security hole. Basically a skelleton key to millions of user data. Names, email addresses, zip codes, orders. If the email indicates a birthdate, even more shit if you chain another vector. Basically an order id / hash pair that should allow users to enter data AND SHOULD ONLY AUTHORIZE THEM TO THE SITE FOR ENTRING DATA. Well, what happend was that a non mathing hash/id pair will not provide an aith token bit it will create a session linked to that order.

Long story short, call url 1 enter the foreign ID, get an error, access order overview site, profit. Obviously a big fucking problem and I still had to run directly to our CEO to get it prioritized because product management thought a style update would be more important.

Oh, and of course the IDs are counted upwards. Making them random would be too unfair towards the poor black hats out there.

TIFU by running DELETE-INSERT on a live server and losing thousands of rows from a separate table. 🤤

TIL If you delete data from indexed table, it will affect any linked tables. I think. Fml. 🤕

At least it was a learning experience for all of us. Hopefully if I keep repeating it enough it will become true...

Perhaps as a tip for the junior devs out there, here's what I learned about programming skills on the job:

You know those heavy classes back in college that taught you all about Data Structures? Some devs may argue that you just need to know how to code and you don't need to know fancy Data Structures or Big o notation theory, but in the real world we use them all the time, especially for important projects.

All those principles about Sets, (Linked) lists, map, filter, reduce, union, intersection, symmetric difference, Big O Notation... They matter and are used to solve problems. I used to think I could just coast by without being versed in them.. Soon, mathematics and Big o notation came back to bite me.

Three example projects I worked in where this mattered:
- Massive data collection and processing in legacy Java (clients want their data fast, so better think about the performance implications of CRUD into Collections)
- ReactJS (oh yes, maps and filters are used a lot...)
- Massive data collection in C# where data manipulation results are crucial (union, intersection, symmetric difference,...)
Overall: speed and quality mattered (better know your Big o notation or use a cheat sheet, though I prefer the first)
Yes, the approach can be optimized here, but often we're tied to client constraints, with some room if we're lucky.

I'm glad I learned this lesson. I would rather have skills in my head and in memory than having to look up things and try to understand them all the time.

Fuking hell!

My mom apparently sold her phone which was not turning on for some reason. Earlier she told that she had gave it to a shop to get it repaired.

I'm just dumbfoudned here that she didn't even consider deleting the data on the phone or even consulting me before selling it.

Thankfully, the phone is linked to google account and I know her account password which is pretty weak. I had told her to change password which she has never done yet. Anyways, I have sent erase phone feature on Google account. Now I hope phone will come online before somebody decides to do anything with data in the phone.

Also, the phone has been super annoyingly slow recently. So I hope nobody is gonna mind that phone at all.

Who the fick asks for BPMN diagrams, Disaster Recovery diagrams and Business Continuity Plan for a SaaS product that is deployed in cloud (Azure) ??

This is a simple app/dashboard that just showcases some data in fancy charts. It shows the data YOU feed. Why do you need BPMN diagram? What am I supposed to put? "Client loads data" and "user sees data"?

I already linked Azure's page on DR. Do yiu want me to copy-paste the contents from that link?

Clients are too much PITA!!!

When my teacher starts talking about linked lists, stacks, and queues

Been working on this project for the last 9 months, it's 1000 times bigger than the original spec, but the worst part of the whole experience is the god damn Microsoft Access database and migrating data from it.

Wanky encoding, references that aren't actually linked up, ID's that aren't unique, meaningless columns and table names.

Pushed me to the edge.

Portfolio websites...are they good, bad, or meh?

As I’m already contemplating making a move from my current (first) dev job due to the fact I’m a glorified data entry clerk, I got thinking about creating a personal/portfolio website.

I already have a domain name, I registered it years ago and just keep renewing it. So I’ve pointed that to my GitHub pages site, and will do some work on this over the weekend.

My question is, are they worth the effort? Would a prospective employer bother to take a look if it was on my cv or linked in?

What pitfalls should I avoid?

Sometimes in our personal projects we write crazy commit messages. I'll post mine because its a weekend and I hope someone has a well deserved start. Feel free to post yours, regex out your username, time and hash and paste chronologically. ISSA THREAD MY DUDES AND DUDETTES
--
Initialization of NDM in Kotlin
Small changes, wiping drive
Small changes, wiping drive
Lottie, Backdrop contrast and logging in implementation
Added Lotties, added Link variable to Database Manifest
Fixed menu engine, added Smart adapter, indexing, Extra menus on home and Calendar
b4 work
Added branch and few changes
really before work
Merge remote-tracking branch 'origin/master'
really before work 4 sho
Refined Search response
Added Swipe to menus and nested tabs
Added custom tab library
tabs and shh
MORE TIME WASTED ON just 3 files
api and rx
New models new handlers, new static leaky objects xd, a few icons
minor changes
minor changesqwqaweqweweqwe
db db dbbb
Added Reading display and delete function
tryin to add web socket...fail
tryin to add web socket...success
New robust content handler, linked to a web socket. :) happy data-ring lol
A lot of changes, no time to explain
minor fixes ehehhe
Added args and content builder to content id
Converted some fragments into NDMListFragments
dsa
MAjor BiG ChANgEs added Listable interface added refresh and online cache added many stuff
MAjor mAjOr BiG ChANgEs added multiClick block added in-fragment Menu (and handling) added in-fragment list irem click handling
Unformatted some code, added midi handler, new menus, added manifest
Update and Insert (upsert) extension to Listable ArrayList
Test for hymnbook offline changing
Changed menuId from int to key string :) added refresh ...global... :(
Added Scale Gesture Listener
Changed Font and size of titlebar, text selection arg. NEW NEW Readings layout.
minor fix on duplicate readings
added isUserDatabase attribute to hymn database file added markwon to stanza views
Home changes :)
Modular hymn Editing
Home changes :) part 2
Home changes :) part 3
Unified Stanza view
Perfected stanza sharing
Added Summernote!!
minor changes
Another change but from source tree :)))
Added Span Saving
Added Working Quick Access
Added a caption system, well text captions only
Added Stanza view modes...quite stable though
From work changes
JUST a [ush
Touch horizontal needs fix
Return api heruko
Added bible index
Added new settings file
Added settings and new icons
Minor changes to settings
Restored ping
Toggles and Pickers in settings
Added Section Title
Added Publishing Access Panel
Added Some new color changes on restart. When am I going to be tired of adding files :)
Before the confession
Theme Adaptation to views
Before Realm DB
Theme Activity :)
Changes to theme Activity
Changes to theme Activity part 2 mini
Some laptop changes, so you wont know what changed :)
Images...
Rush ourd
Added palette from images
Added lastModified filter
Problem with cache response
works work
Some Improvements, changed calendar recycle view
Tonic Sol-fa Screen Added
Merge Pull
Yes colors
Before leasing out to testers
Working but unformated table
Added Seperators but we have a glithchchchc
Tonic sol-fa nice, dots left, and some extras :)))
Just a nice commit on a good friday.
Just a quickie
I dont know what im committing...

I have a small NUC-like machine in my home with an old external hdd connected to it. I use it to run my local gitlab, nextcloud and to test a few websites I build for the lolz.
If you too have a homelab, whether it's a single raspberry or an entire room full or racks, you know damn well that everything you have running locally as a web service keeps going until it doesn't, for whatever fucking reason. This time, it was the turn of my nextcloud.
The machine has arch linux running, I chose it since I already use it on my coding laptop and being a rolling release means I don't have to manually upgrade to a newer version, risking various fuck-ups and consequent screaming of profanity.
The downside is that arch is a bleeding-edge distro, so, despite being pretty good for what concerns security, as updates are pushed out some packages may still require legacy software to work as intended, since obviously not all developers for all packages can release simultaneously.
The problem was that php reached 8.2.x but nextcloud couldn't use anything beyond 8.1, so the highlighted solution was to download php-legacy, a package with a set of utilities which the cloud could use instead of mainline php.

Pretty easy, right? fuck my life, here we go.

I edited apache-httpd's configurations to link the new libraries, updated every reference in every virtual host that could possibly screw up the web server.

Done.

Then I went on and disabled the php-fpm mainline, creating a new systemd unit that would instead run the legacy executable and afterwards I edited nextcloud's additional configs so they use that instead.

Done, getting a bit dizzy, but I reboot everything and breathe.

At this point the migration should be complete, but wait, the server returns an error saying that the application is still trying to use php 8.2+...wait, what in the sysadmin Christ?

Back to nextcloud config, everything is set, everything else in every other fucking php-legacy and web server is fine, the old fpm service is disabled, I am confused, and why in the FUCKING FUCK is the new php-fpm unit failing to start at boot with "error 78/config - directory not found"? Hello? Am I being trolled by a shitty dual-core amazon fake NUC?
Maybe yes, cause it turns out that the unit was referencing a directory in the external hdd, which gets mounted at boot time after the unit itself starts, so nothing much, just a matter of tinkering with cron jobs, a reboot and at least this one is off my balls.

But why still isn't the server responding correctly? why? WHY?

After slamming my cock on the keyboard here and there scrolling back through all the config files I think to myself, hmmm, my gitlab is working flawlessly, well yeah, I didn't need to install the whole web stack, everything was nice and easy wrapped in a docker container...so why am I even here, why the fuck am I bothering with all this layered web-app bullshit, why don't I just run the up-to-date docker image that someone else has already set up for me, back up all the data and reupload them on the application?

Oh joy, you can't imagine, after 3...almost 4 hours of pure computer-touching the relief I had from seeing the blue web page with the "welcome to nextcloud" title.

Right now it's copying back all the files, and the external hdd is now linked to include the data folder.
Like really, everything was solved in two lines of bash.

I am still fuming, but at least I learned a valuable lesson, if you want a service up for yourself, implement it and deploy it as fucking easy straight-forward as you can, giving MAXIMUM priority to already fully-working options that are out there just waiting to be downloaded and used. I swing my scrotal sack on web-apps elegance as long as it's MY homelab in MY place.

Eat a fat dick php.

sudo pacman -Rns nextcloud
sudo systemctl disable --now php-fpm-legacy
sudo pacman -Rns php-legacy
sudo pacman -Rns $(sudo pacman -Qdtq)

Wanted to share one of my projects from school.

3 years ago I had to create a Linked List Mesh in Java that held data in each individual node, as well as location data of each of two of it's neighboring nodes.

I had used a computer since the win 3.1 days and I fooled around with VB on win 95 or 98. I didn't know it was going to be my passion until i wrote a whole data structures library in c++ based on my double linked list i wrote for a class. I called it the ETL, for easy template library (like the STL was hard!!). Thats when i knew i had a knack for it and began really learning.

Begin teaching fundamentals much earlier. For me, I learnt Java classes and some fundamentals for it, but more basic programming skills went by the wayside until 2nd year of Uni.

The course we did on logic was good both years, but stuff like data structures and algorithms (sorting, linked lists etc) should be taught first.

Something else that might be useful is maybe not learning Java initially. What annoyed me with that (and I'm sure confused some people) was the amount of
- "Hey what does that mean?"
- "Uhh, don't worry about it yet"
which while it might encourage you to go read about it, is more likely to encourage the opposite, and tend to ask less questions, even when switching language.

I can't say for other universities, but I think a larger focus should be on gaining skills in the field, rather than becoming employable through doing employability things.
I know plenty of second year students that still couldn't have completed our first semester first year assignment, which was essentially some object manipulation wrapped up in a few classes and a basic console I/O.

When i wrote my first data structure (linked list) in c.
When I first learnt and used the concept of subqueries.
And way before that when i made a static website teaching c and made JavaScript output the result of c code i was explaining.
Also in my first job when i was debugging a shitty 2k plus lines stored procedure for days to realize that it was giving a wrong output just because a single variable was unassigned (null)

Whatever be the current trend on Linked-In, at the end of the day the product development life cycle remains quite the same.

Still, as developers which general domains in software do you think would flourish in the near future?

My picks (not in order) -
>> Cyber security : automation, both offensive and defensive
>> Block chain : trustable data platforms
>> Applied AI : a few key models, applied to all niches, bettering existing UX
>> IOT : wearables, embeddables, smart appliances
>> AR : Navigation prompts, real time info about real life objects
>> VR : Immerse entertainment. (Metaverse 🤮)
>> Quantum computing : first gen costly commercial releases, new algos

What would you add or subtract from this?

A register machine with strings and hashmaps as the only data types and no stack. You have to make one from a linked list of hashmaps.

archeological work is painful and difficult

people in industry don't seem to emphasize/warn how much archeological work there is in being a code monkey

or are there jobs that don't involve it? i imagine the skill remains essential

greenfield work to be the exception not the norm, and start up life is hell and a gamble

interview process seems to completely disregard this, as i imagine it'd be difficult to assess, unlike leetcoding linked lists or code golfing stuff without using data structures, or whatever awful things they ask for in leetcode hards or whatever

is there an algorithm that can spot similarities between two linked lists on the virtue of what an element is linked to? I'm working with my bank statements in CSV and want to work with them mechanically, and I don't really want to spend time checking manually what I have imported (to Wallet by Budget Bakers) and what I'm missing between imports

So I want to make sure I’m not an idiot

I’ve tried several strategies to localized image segmentation

The first was locating a data pixel and expanding a bounding box around mall pixels close enough to be part of a shape

The next was pushing pixels outward to find connected edges until all edges has a point plotted for them forming a mesh it selected a point and moved in all 8 directions looking for the next edge Skipping directions another point was on

The last that I’m working on draws out all the data pixels into a 2d dictionary and then finds all line segments in six directions and then goes back through and links them and all segments previously linked to all newly linked segments first arranging them into panels of larger pixel groups to minimize iterations

Am I overthinking this ?

I'm developing an android app that collect geolocalized data from users, give them information about the service, and added some augmented reality functions.
I need to create a web app that will be linked with the android app, showing graph about users data in a dashboard. Which JS framework you will choose to create the dashboard?

Anyone here that has experience with linked open data?

Can anyone help me in my task
(Solve n queens problem by stack using linked list) Data structure c++🙏