For less than a second, I thought I found a bug on devrant

What a fantastic waste of time😂

function undefined() { }

There we go. Now undefined IS a function. Damn you JavaScript errors.

Mark Zuckerberg 😂

“Any application that can be written in JavaScript, will eventually be written in JavaScript.” — Jeff Atwood

Fast-forward 20 years, a plane crashes, they find and open the black box and in the flight logs they can see the cause clearly: ”undefined is not a function”.

Far Cry 4. I have an "undefined" and I'm not afraid to use it!

LONG RANT AHEAD!

In my workplace (dev company) I am the only dev using Linux on my workstation. I joined project XX, a senior dev onboarded me. Downloaded the code, built the source, launched the app,.. BAM - an exception in catalina.out. ORM framework failed to map something.

mvn clean && mvn install

same thing happens again. I address this incident to sr dev and response is "well.... it works on my machine and has worked for all other devs. It must be your environment issue. Prolly linux is to blame?" So I spend another hour trying to dig up the bug. Narrowed it down to a single datamodel with ORM mapping annotation looking somewhat off. Fixed it.

mvn clean && mvn install

the app now works perfectly. Apparently this bug has been in the codebase for years and Windows used to mask it somehow w/o throwing an exception. God knows what undefined behaviour was happening in the background...

Months fly by and I'm invited to join another project. Sounds really cool! I get accesses, checkout the code, build it (after crossing the hell of VPNs on Linux). Run component 1/4 -- all goocy. run component 2,3/4 -- looks perfect. Run component 4/4 -- BAM: LinkageError. Turns out there is something wrong with OSGi dependencies as ClassLoader attempts to load the same class twice, from 2 different sources. Coworkers with Windows and MACs have never seen this kind of exception and lead dev replies with "I think you should use a normal environment for work rather than playing with your Linux". Wtf... It's java. Every env is "normal env" for JVM! I do some digging. One day passes by.. second one.. third.. the weekend.. The next Friday comes and I still haven't succeeded to launch component #4. Eventually I give up (since I cannot charge a client for a week I spent trying to set up my env) and walk away from that project. Ever since this LinkageError was always in my mind, for some reason I could not let it go. It was driving me CRAZY! So half a year passes by and one of the project devs gets a new MB pro. 2 days later I get a PM: "umm.. were you the one who used to get LinkageError while starting component #4 up?". You guys have NO IDEA how happy his message made me. I mean... I was frickin HIGH: all smiling, singing, even dancing behind my desk!! Apparently the guy had the same problem I did. Except he was familiar with the project quite well. It took 3 more days for him to figure out what was wrong and fix it. And it indeed was an error in the project -- not my "abnormal Linux env"! And again for some hell knows what reason Windows was masking a mistake in the codebase and not popping an error where it must have popped. Linux on the other hand found the error and crashed the app immediatelly so the product would not be shipped with God knows what bugs...

I do not mean to bring up a flame war or smth, but It's obvious I've kind of saved 2 projects from "undefined magical behaviour" by just using Linux. I guess what I really wanted to say is that no matter how good dev you are, whether you are a sr, lead or chief dev, if your coworker (let it be another sr or a jr dev) says he gets an error and YOU cannot figure out what the heck is wrong, you should not blame the dev or an environment w/o knowing it for a fact. If something is not working - figure out the WHATs and WHYs first. Analyze, compare data to other envs,... Not only you will help a new guy to join your team but also you'll learn something new. And in some cases something crucial, e.g. a serious messup in the codebase.

Teacher: Homework for next time is to make 2 web pages with three javascript.
* whole class is quiet *
Me: What's "three JavaScript"
T: undefined
M: Do you mean three files?
T: No, I mean three JavaScript.
M: Okay, so let's go with five CSS and twelve HTML as well then...

Please, go somewhere else when you can't explain your OWN HOMEWORK ASSIGNMENT. Holy fuck.

WHAT DO YOU MEAN IT'S UNDEFINED. IT'S RIGHT THERE.

StackOverflow: let's marginalize your "problem" and focus on the real issue at hand, which is that line 4 doesn't conform to the language standards and thus will lead to undefined behavior on a single kind of 8-bit microcontroller made in 1984 that is no longer in use.

What do you remember?

I just wanted to place an order

Javascript devs

OMG everybody, $Undefined a month is SUCH a good deal.

JavaScript in nutshell.

¯\_(ツ)_/¯

1. Use "undefined" as a username on all your accounts
2. ???
3. PROFIT!!!

My resolution for this year is to stop hating javascript.

Error: cannot read property "year" from undefined.

Marvel fan here😂

I just ate in Undefined

I wonder how did this travesty make its way to production.

A lite story about how i was hired at 16 years old.
Me at 11. Modifying HTML templates to create a sign up page for a game. Me at 14. Created some worthless websites in the past (at a training), barely knowing the structure of HTML.
Me at 15. Made my first website for a customer (using WordPress for the first time, didn't know how to use it before). The website was selling apartments, it was looking very good and went on the first place on SEO. Got my first money (100E).
Me at 16. Made some other WordPress websites for other customers (one of them still haven't paid, the website was made way back in 2015), so i shut down the website and replaced it with a text saying "This website is currently down until the customers pays the developer".
Me still at 16. A friend of my mom sent my CV to multiple companies, to work as a intern to learn more, and one of them accepted me for a interview (a well known and one of the best company with 30~ people)
Went to the interview, asked me about what i realized, what i can do, about my knowledges in others languages etc (forgot to mention that i love the computers from young age, so i was very good in them, specially at the age of 11), so they were happy about it and asked called me for another interview with the boss. Went to it, the boss asked me some tricky questions, i answered them immediately, he was very surprised about my knowledge at that age and accepted me immediately. After working for 2 weeks, instead of hiring me as a intern for 4-6 months, they instead hired me as a normal person, as a front end developer, for an undefined date, making 250 E / Month (6 hours per day in summer)
Now, I'm in the 11 grade, working for them about 9 months, making 315 E / Month, working for 4 hours per day after school, the place is cool, my entire team (family) is very funny and very cool, and they asked me many times to help them with different problems they had and i fixed them immediately (they really didn't know some stuff which i knew). Worked on big projects and worked on some from scratch by myself and they were very happy about how it went.

TLDR: was talented in computers (software), I'm a fast learner, barely knew about making websites, hired as a front end developer at 16 yr.

Btw, I'm in love with DevRant, I'm feeling like home everytime i visit this community :').

P.S. Sorry for my bad English and the mistakes i made.

alert("Thanks for reading my first rant!");

IF LIVES DEPEND ON A SYSTEM

1. Code review, collaboration, and knowledge sharing (each hour of code review saves 33 hours of maintenance)

2. TDD (40% — 80% reduction in production bug density)

3. Daily continuous integration (large code merges are a major source of bugs)

4. Minimize developer interruptions (an interrupted task takes twice as long and contains twice as many defects)

5. Linting (catches many typo and undefined variable bugs that static types could catch, as well as a host of stylistic issues that correlate with bug creation, such as accidentally assigning when you meant to compare)

6. Reduce complexity & improve modularity  -- complex code is harder to understand, test, and maintain

-Eric Elliott

Managers are an interesting breed.

Yeasterday I took part in one of the most confusing meeting I havr ever had.
It was supposed to be with two managers and another coleague to discuss an undefined topic ( it was market internal discussion ). The coleague was on leave so it was just me and them. So...
I get to the meeting room on the dot, it was deserted. I proceed to sit down and open devRant :p
They finally show up, come in, sit down on the opoaite side of the table from me, discuss some bussiness items, their wifes and children and tell a couple of jokes and then they say we're done.( my presence was not really aknoledged so far apart from a hello)
Out of sheer confusion I ask: "So why was my presence actually necessary?" The answer did not fail to confuse me even more than the actual meeting: "Because your coleague also had to be here"
Just to make it clear, they wanted to assign him some stuff and that's it.

I am still confused. Interesting creatures these managers. I should disect one's brain some day to find out how it works.

Backend people

"Errors? Won't happen to me!"

One of my first jobs was to finish and maintain a program, that was made by a guy who had a real genius image among others. Years later, people said "oh him, that smart guy."

I never met him, but that's what i heard.

However, he was not only smart, but it seems he was also very confident. That's what i deduct from his code.

He didn't use catch-blocks. They were all empty. Not even logged.

If errors appeared , it was not possible to see what happened and where and why. The program would continue it's execution and if following steps could not work, because there had been an unnoticed exception, it would just throw another unnoticed exception and at some point, end in an undefined state.

I hate all of these rants about JavaScript being a terrible language.

In reality, it's one of the easiest languages to work with. This makes it easier for new programmers to write messy code, but is it the language's fault?

People get mad about the things that happen when you multiply "undefined" and a string...what do you expect?

You also have the freedom to choose from a variety of tools the community has created to solve existing problems. People just don't realize that they don't *have* to learn everything, you just learn as you need them.

Don't blame JavaScript for you bad programming, terrible type conversion needs, and great tooling.

Caught someone testing in prod 🙃

This codebase reminds me of a large, rotting, barely-alive dromedary. Parts of it function quite well, but large swaths of it are necrotic, foul-smelling, and even rotted away. Were it healthy, it would still exude a terrible stench, and its temperament would easily match: If you managed to get near enough, it would spit and try to bite you.

Swaths of code are commented out -- entire classes simply don't exist anymore, and the ghosts of several-year-old methods still linger. Despite this, large and deprecated (yet uncommented) sections of the application depend on those undefined classes/methods. Navigating the codebase is akin to walking through a minefield: if you reference the wrong method on the wrong object... fatal exception. And being very new to this project, I have no idea what's live and what isn't.

The naming scheme doesn't help, either: it's impossible to know what's still functional without asking because nothing's marked. Instead, I've been working backwards from multiple points to try to find code paths between objects/events. I'm rarely successful.

Not only can I not tell what's live code and what's interactive death, the code itself is messy and awful. Don't get me wrong: it's solid. There's virtually no way to break it. But trying to understand it ... I feel like I'm looking at a huge, sprawling MC Escher landscape through a microscope. (No exaggeration: a magnifying glass would show a larger view that included paradoxes / dubious structures, and these are not readily apparent to me.)

It's also rife with bad practices. Terrible naming choices consisting of arbitrarily-placed acronyms, bad word choices, and simply inconsistent naming (hash vs hsh vs hs vs h). The indentation is a mix of spaces and tabs. There's magic numbers galore, and variable re-use -- not just local scope, but public methods on objects as well. I've also seen countless assignments within conditionals, and these are apparently intentional! The reasoning: to ensure the code only runs with non-falsey values. While that would indeed work, an early return/next is much clearer, and reduces indentation. It's just. reading through this makes me cringe or literally throw my hands up in frustration and exasperation.

Honestly though, I know why the code is so terrible, and I understand:

The architect/sole dev was new to coding -- I have 5-7 times his current experience -- and the project scope expanded significantly and extremely quickly, and also broke all of its foundation rules. Non-developers also dictated architecture, creating further mess. It's the stuff of nightmares. Looking at what he was able to accomplish, though, I'm impressed. Horrified at the details, but impressed with the whole.

This project is the epitome of "I wrote it quickly and just made it work."

Fortunately, he and I both agree that a rewrite is in order. but at 76k lines (without styling or configuration), it's quite the undertaking.

------

Amusing: after running the codebase through `wc`, it apparently sums to half the word count of "War and Peace"

Intellisense at its best

Today we will play a new game,
Reddit: find the error 😂

This should just take a minute

Undefined from HELL

At first I was like :/ but then I remembered I actually bought undefined.host..

Perfect, 100% code-free, Sunday

I love Linux, but its community can be so full of incompetent assholes..

Just now I asked in Freenode ##linux how to get the process ID of my current running process in bash. I got my answer - it's a shell built-in called "$$".

Then people start to nitpick some more - why do you need it? How is that different from an exit? - to which my response was.. well I know the whole idea behind exit codes, and I'd use it whenever possible, in all defined behavior that allows my program to terminate itself whenever it can. This pidfile however would be used to exit itself and provide diagnostic information whenever the program enters undefined behavior - a segfault in C language. Scenarios in which I don't have full control over the script's behavior anymore, such as the system entering an unworkable state where the system stalled, still got some binaries in RAM but the rootfs got unwritable, such as now - very helpfully, thanks HP! - when my laptop likely overheated and shat itself. I issued sudo reboot into it, but even that wouldn't issue properly anymore due to the /sbin/poweroff binary becoming inaccessible too. I had to issue a hard power cycle.. one of the few times in which I'm thankful to HP for actually causing shit like this, lol.

Point is, that undefined behavior is what I'm trying to mitigate against. I certainly can't let any files other than diagnostics remain in nonvolatile storage like that, especially when their state should be predictable in order to ensure good operation (like files expressing whether the script is already running or not, i.e. lock files).

Back to that IRC chat. Aside from the answer, I got ridicule from people who probably don't even know how to properly compile a kernel. Ubuntu users, overconfident scum. Sometimes I feel like I should ask questions in channels like #archlinux only, where such incompetency is ridiculed on its own.

The single cuntiest error I ever had in one sentence:

Cannot read property 'undefined' of undefined.

DevRant squad!!!1!1
@Alice aka Madame Pink
@AlexDeLarge aka Swearer Supreme
@linuxxx aka Privacy Knight
@jase aka Master of Clones

If i missed someone just tell me

*sigh*

Today I was wandering through the code of the project I work on. The project is on JS, turns out someone named an object key `undefined`. They had the wonderful idea since they didn't want to pass a key through on the side where the info stored in the object is used(or at least that's what I assume).

Look at the image. (not the actual implementation but you get it and it actually works if you want to try it)

👏🏼 I don't know who did it and I rather not git blame it, but pray to the 7 gods you never do something like that again while I'm around or you are going to be in need of prosthetic fingers to code again motherfucker.

Well, I would love to buy undefined!

~RANT
I started two months ago a new role in a new company.
Together with 3 colleagues I manage a HUGE OpenStack platform (I’m talking about more than 300 customers, many petabytes of data, dozens of compute nodes 😍).

On Friday night a well-known multinational had the GREAT idea to update the software of one of the core components of the platform (Neutron).
Obviously it all went wrong and customers started to call and open tickets, so even if it was already past midnight we’ve been all called to arms.
As a workaround we had to rebuild ALL the networks, detach all the ports and reattach them to the VMs, with all the errors that came with this kind of operations, such as failing to get an internal/external IP, fail to boot etcetera.

What amuses me is the fact that the above-mentioned multinational just asked for logs with no solution (except for the above workaround) until Monday morning.

It has been a good weekend, i talked with professionals from all over the world, in various languages, and worked multi-tasking with two different computers, with a third that was used just to share my screen and VPN for the management network.

During this weekend I virtually met all the possible colleagues that I will meet in this new role, and it was pretty funny to see how they handle stress. (Badly if you ask)

I’ve been woken up at 7:30 after falling asleep at 6:45, I’ve slept 17 hours in 5 days, haven’t taken a shower in 5 days (I know, it happens, I worked from home) but it was worth it.
Not only and merely for the money (overtime work), but mainly for the job itself.
I love to handle this HUGE infrastructures for now, even if I think they have many limitations and many components could have been written better.

The best thing about this weekend was to meet a group of people from all over the country and the world that worked non-stop from Friday night until Wednesday night to solve the situation.

All of them understood me when I asked them questions, and didn’t treat me like the [insert random]science nerd that I am.

I felt like in the movies, in front of three monitors, working from the comfort of my chair, in my underwear, eating as fast as I could because I was constantly in call with someone.

Apart from that, WHAT THE FUCK WENT THROUGH YOUR HEAD TO DEPLOY AN UPDATE ON FRIDAY NIGHT, YOU FUCKING PIECE OF adorable man???

WHY COULDN’T YOU WAIT UNTIL MONDAY??? NOBODY USES THOSE SERVICES AT NIGHT APART FROM THE SCHEDULED JOBS!!!!!

I HOPE YOU’LL HAVE A LONG AND PROSPER LIFE, FULL OF JOY AND HAPPINESS

Programmer one-line horror stories? A few off the top of my head:

Segmentation fault (core dumped)

'Undefined' is not a function

Unit test failed: expected '0' but got '-1'

Connection to 'localhost:8080' has been lost

Malformed JSON string at col: 46,372. Expected '}'

- Find an old js project in your computer
- Try to start it
"Uncaught TypeError: Cannot read property 'undefined' of undefined"
- Delete it

Just got my masters degree in AI
Now it's time to relax and work on my old old projects that i left 😊

"Cannot read property of undefined."
You mom is undefined, bitch!

Hey guys,

this rant will be long again. I'm sorry for any grammar errors or something like that, english isn't my native language. Furthermore I'm actually very sad and not in a good mood.

Why? What happened? Some of you may already know - I'm doing my apprenticeship / education in a smal company.
There I'm learning a lot, I'm developing awesome features directly for the clients, experience of which other in my age (I'm only 19 years old) can only dream.
Working in such a small company is very exhausting, but I love my job, I love programming. I turned my hobby into a profession and I'm very proud of it.
But then there are moments like the last time, when I had to present something for a client - the first presentation was good, the last was a disaster, nothing worked - but I learned from it.

But this time everything is worse than bad - I mean really, really worse than bad.

I've worked the whole week on a cool new feature - I've done everything that it works yesterday, that everything gets done before the deadline of yesterday.

To achieve this I've coded thursday till 10pm ! At home! Friday I tested the whole day everything to ensure that everything is working properly. I fixed several bugs and then at the end of the day everything seems to be working. Even my boss said that it looks good and he thinks that the rollout to all clients will become good and without any issues.

But unfortunately deceived.

Yesterday evening I wrote a long mail to my boss - with a "manual". He was very proud and said that he is confident that everything will work fine. He trusts me completly.

Then, this morning I received a mail from him - nothing works anymore - all clients have issues, everything stays blank - because I've forgotten to ensure that the new feature (a plugin) and its functionality is supported by the device (needs a installation).
First - I was very shoked - but in the same moment I thought - one moment - you've written an if statement, if the plugin is installed - so why the fuck should it broken everything?!
I looked instant to the code via git. This has to be a very bad joke from my boss I thought. But then I saw the fucking bug - I've written:
if(plugin) { // do shit }
but it has to be if(typeof plugin !== 'undefined')

I fucked up everything - due to this fucking mistake. This little piece of shit I've forgotten on one single line fucked up everything. I'm sorry for this mode of expression but I thought - no this can not be true - it must be a bad bad nightmare.
I've tested this so long, every scenario, everything. Worked till the night so it gets finished. No one, no one from my classmates would ever think of working so long. But I did it, because I love my job. I've implemented a check to ensure that the plugin is installed - but implemented it wrong - exactly this line which caused all the errors should prevent exactly this - what an irony of fate.

I've instantly called my boss and apologized for this mistake. The mistake can't be undone. My boss now has to go to all clients to fix it. This will be very expensive...

Oh my goodnes, I just cried.
I'm only working about half a year in this company - they trust me so much - but I'm not perfect - I make mistakes - like everyone else. This time my boss didn't looked over my code, didn't review it, because he trusted me completly - now this happens. I think this destroyed the trust :( I'm so sad.
He only said that we will talk on monday, how we can prevent such things in the feature..
Oh guys, I don't know - I've fucked up everything, we were so overhelmed that everything would work :(
Now I'm the looser who fucked up - because not testing enough - even when I tested it for days, even at home - worked at home - till the night - for free, for nothing - voluntary.

This is the thanks for that.
Thousand good things - but one mistake and you're the little asshole. You - a 19 year old guy, which works since 6 months in a company. A boss which trusts you and don't look over your code. One line which should prevent crashing, crashed everything.

I'm sorry that this rant is so long, I just need to talk to you guys because I'm so sad. Again. This has happend to frequently lately.

When you check out some older code and realise you are not the brightest snowflake

Use profanity labelled variables... like the $penis I just used in my code... (makes coding fun, until u get "undefined variable: cannot find $penis on line 31")

In my first summer at my internship I was fixing up a PHP script that a previous developer wrote... It collected our customer's emails and sent them to MailChimp for marketing.

The SQL query to get the emails was pretty standard, but what he did next was not.

There were for loops nested 3 deep. The outer loop's counter was i. The inner was ii. And the deepest was iii. That alone made it hard to read, but for a couple years some iii's and ii's were mixed up when getting values for arrays. So it was even harder to tell what it was supposed to do.

The inner loop also started at i-20. This was so he could look through and see if an email was already included from that query and skip it. But he didn't check the bounds, so the first 20 times through the outer loop, the inner loop would throw `undefined index -20` errors.

In order to fix all this I did an order by on the query, and kept a last email variable that I used for comparison. Pretty basic. This also lowered it to just one loop.

I talk about it on a regular basis with my coworkers and we all laugh about it. I also bring it up when upper management thinks they can code, because that ex developer is now an executive.

The GashlyCode Tinies

A is for Amy whose malloc was one byte short
B is for Basil who used a quadratic sort
C is for Chuck who checked floats for equality
D is for Desmond who double-freed memory
E is for Ed whose exceptions weren’t handled
F is for Franny whose stack pointers dangled
G is for Glenda whose reads and writes raced
H is for Hans who forgot the base case
I is for Ivan who did not initialize
J is for Jenny who did not know Least Surprise
K is for Kate whose inheritance depth might shock
L is for Larry who never released a lock
M is for Meg who used negatives as unsigned
N is for Ned with behavior left undefined
O is for Olive whose index was off by one
P is for Pat who ignored buffer overrun
Q is for Quentin whose numbers had overflows
R is for Rhoda whose code made the rep exposed
S is for Sam who skipped retesting after wait()
T is for Tom who lacked TCP_NODELAY
U is for Una whose functions were most verbose
V is for Vic who subtracted when floats were close
W is for Winnie who aliased arguments
X is for Xerxes who thought type casts made good sense
Y is for Yorick whose interface was too wide
Z is for Zack in whose code nulls were often spied

- Andrew Myers

Swag++

I spent more than an hour trying trying to debug why two functions were always returning undefined. I even put in conditional breakpoints and executed the statements to confirm the logic was correct.

I forgot return.

Who the hell decided to put 'null' in JavaScript when there is already an 'undefined'
...😤😡...
Like one empty value isn't enough

Bug in production.

So our university website was recently refurbished with new design. But fucking hell it's bad. Not only the whole website is full of bugs, the design choices are extremely poor.

Sometimes, when I open a course page, it opens a modal with undefined as it's title. And I have to click close button ten times to close the modal.

I can't even blame university. The guy was a former student and Uni probably trusted him. What a retard!

Did a bunch more cowboy coding today as I call it (coding in vi on production). Gather 'round kiddies, uncle Logan's got a story fer ya…

First things first, disclaimer: I'm no sysadmin. I respect sysadmins and the work they do, but I'm the first to admit my strengths definitely lie more in writing programs rather than running servers.

Anyhow, I recently inherited someone else's codebase (the story of my profession career, but I digress) and let me tell you this thing has amateur hour written all over it. It's written in PHP and JavaScript by a self-taught programmer who apparently discovered procedural programming and decided there was nothing left to learn and stopped there (no disrespect to self-taught programmers).

I could rant for days about the various problems this codebase has, but today I have a very specific story to tell. A story about errors and logs.

And it all started when I noticed the disk space on our server was gradually decreasing.

So today I logged onto our API server (Ubuntu running Apache/PHP) and did a df -h to check the disk space, and was surprised to see that it had noticeably decreased since the last time I'd checked when everything was running smoothly. But seeing as this server does not store any persistent customer data (we have a separate db server) and purely hosts the stateless API, it should NOT be consuming disk space over time at all.

The only thing I could think of was the logs, but the logs were very quiet, just the odd benign message that was fully expected. Just to be sure I did an ls -Sh to check the size of the logs, and while some of them were a little big, nothing over a few megs. Nothing to account for gigabytes of disk space gradually disappearing.

What could it be? I wondered.

cd ../..
du . | sort --sort=numeric

What's this? 2671132 K in some log folder buried in the api source code? I cd into it and it turns out there are separate PHP log files in there, split up by customer, so that each customer of ours (we have 120) has their own respective error log! (Why??)

Armed with this newfound piece of (still rather unbelievable) evidence I perform a mad scramble to search the codebase for where this extra logging is happening and sure enough I find a custom PHP error handler that is capturing (most) errors and redirecting them to these individualized log files.

Conveniently enough, not ALL errors were being absorbed though, so I still knew the main error_log was working (and any time I explicitly error_logged it would go there, so I was none the wiser that this other error-catching was even happening).

Needless to say I removed the code as quickly as I found it, tail -f'd the error_log and to my dismay it was being absolutely flooded with syntax errors, runtime PHP exceptions, warnings galore, and all sorts of other things.

My jaw almost hit the floor. I've been with this company for 6 months and had no idea these errors were even happening!

The sad thing was how easy to fix all the errors ended up being. Most of them were "undefined index" errors that could have been completely avoided with a simple isset() check, but instead ended up throwing an exception, nullifying any code that came after it.

Anyway kids, the moral of the story is don't split up your log files. It makes absolutely no sense and can end up obscuring easily fixable bugs for half a year or more!

Happy coding.

Error: undefined variable "social"

Facebook for developers

Great job Facebook 🙃

(also, damn I wish I could post this as the old "undefined" category 😜)

My Sunday Morning until afternoon. FML. So I was experiencing nightly reboots of my home server for three days now. Always at 3:12am strange thing. Sunday morning (10am ca) I thought I'd investigate because the reboots affected my backups as well. All the logs and the security mails said was that some processes received signal 11. Strange. Checked the periodics tasks and executed every task manually. Nothing special. Strange. Checked smart status for all disks. Two disks where having CRC errors. Not many but a couple. Oh well. Changing sata cables again 🙄. But those CRC errors cannot be the reason for the reboots at precisely the same time each night. I noticed that all my zpools got scrubbed except my root-pool which hasn't been scrubbed since the error first occured. Well, let's do it by hand: zpool scrub zroot....Freeze. dafuq. Walked over to the server and resetted. Waited 10 minutes. System not up yet. Fuuu...that was when I first guessed that Sunday won't be that sunny after all. Connected monitor. Reset. Black screen?!?! Disconnected all disks aso. Reset. Black screen. Oh c'moooon! CMOS reset. Black screen. Sigh. CMOS reset with a 5 minute battery removal. And new sata cable just in cable. Yes, boots again. Mood lightened... Now the system segfaults when importing zroot. Good damnit. Pulled out the FreeBSD bootstick. zpool import -R /tmp zroot...segfault. reboot. Read-only zroot import. Manually triggering checksum test with the zdb command. "Invalid blckptr type". Deep breath now. Destroyed pool, recreated it. Zfs send/recv from backup. Some more config. Reboot. Boots yeah ... Doesn't find files??? Reboot. Other error? Undefined symbols???? Now I need another coffee. Maybe I did something wrong during recovery? Not very likely but let's do it again...recover-recover. different but same horrible errors. What in the name...? Pulled out a really old disk. Put it in, boots fine. So it must be the disks. Walked around the house and searched for some new disks for a new 2 disk zfs root mirror to replace the obviously broken disks. Found some new ones even. Recovery boot, minimal FreeBSD Install for bootloader aso. Deleted and recreated zroot, zfs send/recv from backup. Set bootfs attribute, reboot........
It works again. Fuckit, now it is 6pm, I still haven't showered. Put both disks through extensive tests and checked every single block. These disks aren't faulty. But for some reason they froze my system in a way so that I had to reset my BIOS and they had really low level data errors....? I Wonder if those disks have a firmware problem? So that was most of my Sunday. Nice, isn't it? But hey: calm sea won't make a good sailor, right?

Damn, Natasha Bedingfield's Unwritten accurately describes the start of my workday coding sessions.

Actual production code:

function isEmpty(val) {
return typeof val === 'undefined'
|| val === undefined
|| !(val !== undefined);
}

I'm starting to think the "infinite monkeys" metaphor is not a metaphor...

As à french developer, today I learned we can use accent in variable name.
Like let étude = undefined.

Why would use accent in variable name ? Huh ?

I wonder if I have to fire the guy who made me discover this.

Does anyone know an extension or library that helps determine if a co-worker is into me?

Or how to handle such inputs

I keep getting a fatal error: call to undefined function

String nullabity check duel...
null, isEmpty(), "", " ", '', ' ', " null", boolean, NaN, undefined, isNullOrEmpty and finally try-catch

Was forced to do some work on Windows this week (CAD tools that runs only on Windows). I spent a few days just setting up the tools. There were quite a few things I realized I forgot about Windows (as compared to Linux).

1) Installation times are down right horrific. What exactly are the installer doing for 10 minutes?
2) .NET is a cluster fuck. Not even Microsofts repair tool can fix it, but rather just hangs. I ended up using another tool to nuke it and reinstall.
3) Windows binary installs are insanely huge, thus, takes forever to download.
4) The registry is a pointless database that must have been written in hell with the single intent of destroying users will to live. The sole existence of the registry is another proof that completely incompetent engineers designed Windows.
5) Rebooting is the only way to solve many problems. This is another sure sign of a fundamentally fucked up OS design.
6) What the heck is wrong with the GUIs designers? The control panel must be the worst design ever. There are so many levels to get to a particular setting I'm getting dizzy. Nothing gets better by the illogical organisation.
7) Windows networking. A perversion of the tcp/ip stack that makes it virtually impossible to understand a damn thing about the current network configuration. There are at least 3 different places that effects the settings.
8) Windows command prompt. Why did they even bother to leave it in? The interpreter is as intelligent as retarded donut. You can't do anything with it, except typing "exit" and Google for another solution.
8) Updates. Why does it takes hundreds of updates per month to keep that thing safe?
9) Despite all updates that is flying out of Redmond like confetti, it is still necessary to install antivirus to keep the damn thing safe. That cost extra money, and further cost you by degrading performance of your hardware.
10) Window performance. Software runs like it was swimming in molasses. The final stab in the back on your hardware investment, and pretty much sends performance on your hardware back a few hundred bucks more.
11) Closed source is evil. If something crash consistently, you might find a forum that address the issues you have. Otherwise you're out of luck. On the other hand, it might be for the better. I imagine reading the code for Windows can lead to severe depression.

I'm lucky to be a Linux dev, and should probably not complain too much... But really, Windows, go get yourself hit by a truck and die. I won't miss you.

A customer was complaining that the twitter feed on their homepage was listing strange tweets containing curses. somehow a JavaScript variable was not assigned correctly and got a value of 'undefined'. because @undefined is an existing twitter handle the code did not crash and went on displaying the wrong tweets.

'undefined is not a function'

In the near future...

"Cannot read property length of undefined..."

That's not what your mom said last night.

Way to go, JavaScript, way to go.

Spent 30 minutes figuring out WHY THE FUCK is toggle not working.

Turned out the value was undefined because of a fucking typo!

I was done arguing with people about undefined and implementation defined behaviors and what the standard is. I had to make this after someone told "which standard book are you talking about? Which university teaches it?"

If everyone on devrant was in a bar fight, what would they do?

I would run around and get killed...

is it 'undefined' as a tag, or 'undefined' as en error?

Code comments #1: A way to document bad code that wasn't reduced to it's essentials and thus unreadable. Bad.

Code comments #2: A way to explain for non-programmers how the code works. Wrong place.

Code comments #3: Company policy. No one really knows why, but others do that, so we better do it to. The management sucks.

Code comments #4: Because some hip methodology/guru describes how to document code. After a few years, when the methodology has been (unofficially) forgotten, everyone still comments the code the same way. The old management sucked.

Code comments 5#: For insecure programmers who want to convince them self they understand the code they've written. Maybe apply at McDo?

Code comments #6: Some programmers are apparently paid by lines of code. Possibly understandable.

// Comments, anyone?

Life of dev

birth();

while(alive()) {
....code();
....debug();
....insertRandomBugRant();
}

while(dead())
{
....ThereWasBugInMyCode();
}

Fatal error: Call to undefined function birth(); on line 1

Useful suggestions from Jira.
I would like to know how the "undefined" button looks like though 😂

Well, that's kinda funny

Undefined is not a object.

I love javascript, but sometimes it's just an incredibly stupid language, such as when undefined variables get interpreted as string literal "undefined" when concatenating strings. I like it better how, for example, PHP handles undefined values, that nulls just turn into "". Better still: typed languages, where most stupid mistakes are caught already at compilation, instead of having to spend hours to track down where that mysterious "undefined" comes from. As I said, I love javascript - because it is easy to code, flexible and forgiving in many ways. But I hate it for the exact same reason, for being such a sloppy fluffy...thing, and a bugger to debug. If javascript would be an animal, it would be a cute and cuddly cat that you instantly find adorable, but it's actually quite fat and lazy, plus its fur is littered with ticks and other bugs.

Shamless rant towards the shamless Cursey dude. 😫

So whole day I have been trying to pass a variable from laravel blade view to vue2 component file. All in seperate files. I know that I have successfully passed 1 or 0 in same flow before. So I was following the same steps to pass my string variable. It kept giving me undefined. No google helped and I had been doing all kinds of stupid useless trials. All failed.

Because it is supposed to fail. 😐
I only learned it at the end of the day.

HEY!
JAVASCRIPT!
I wasted 3 hours on your this. self. null, undefined, + asynch functions, bullshit "features"...

AGAIN...

and your taking 8 seconds to compile and test each wild guess that I make until I finally console.log every single fucking variable in order to make sense of it all

so, as usual, FUCK YOU

Well done Google maps

Undefined user - 404 not found

Me: I hate Windows/PHP/Gradle builds/etc

Other devRanters: Did we just became friends?

Me: friends is undefined. Please go to StackOverflow for undefined error.

*I'm still socially awkward*

I think javascript is a great language, but it has some really ugly parts.

For some reason, it really annoys me that JS developers are ok with things like

if (typeof something === "undefined")

I mean, comparing strings like that!

Hard to believe some "experimented" js developers does not know this difference

Someone else always have git log like this??
Or just me? 😂 ;-)

commit 6e71f545c3
Author: ShellAddicted
Date: Sat Sep 9 02undefined21 2017

it Works!!!

commit 6ac2c98bf
Author: ShellAddicted
Date: Sat Sep 9 01undefined47 2017

works more or less

commit 411b8e12
Author: ShellAddicted
Date: Sat Sep 9 00undefined00 2017

Initial state not working.

EDIT:
I just noticed that devrantron modified (bug) my rant (see the undefined in times)

I really dislike when people don't use braces { } on if/else statements.

If(almond.harvestStatus == undefined) almond.harvestMode=false
almond.dropdown = false.

Undefined behaviours in C deserve a place in hell..

> Am writing code
> Life is good
> Add debugger keyword
> Script pauses
> Type in var name... Undefined.
> ...What?
> Check out local scope. It's there. What the fuck?
> Add console.log(myVariable)
> Refresh
> Logs variable no problem. Cool.
> Type in my var name
> Undefined

FFFUUUUUUU-

If got to do some bugfixing at work today.
Looking through code:

if (x !== undefined || x !== null){

I want the person who wrote this to wear the ugliest and scratchiest christmas sweater with "i write bad code" written on it

in math someone said that if
x = x / 0 then x = undefined

he must be using a js calculator

My PM keeps hiring developers that don't know what an undefined object means. Pfff

Alright #html

Init Mud. (A poem)

A Giant Ball of Mud.
Haphazard in structure.
A sprawling, enthralling, duct-taped warning,
Of things to come.

Tumbling down a well-worn path
Of untamed growth and aftermath.
Into Spaghetti-code Jungle.

Where quick and dirty wins the day
And warnings spoken hold no sway
Or fall on deaf ears in the undergrowth.

Tumbling.
Gaining weight.
Bits stuck on.
Bytes taken out.
Patches,
On top of patches,
On top of obsolescence.

Hacked at, uploaded
All elegance eroded.
Made and remade
Then duplicated
Relocated
Refined and redesigned
Suffocated by expedient repair after expedient repair
The original self no longer there
Replaced by something
Unwieldy.

Design resigned to undefined
An architectural mystery
Whose function can no longer be
Seen or gleaned
From obfuscated in-betweens
Of classes
Made and remade
Duplicated.
Abused.
A squirming library of disused.
Pulled at, prodded, committed
Corners cut and parts omitted.
Bug ridden branches fused to a rotting core.

The structure...
The system...
The content...

Mud.

My CTO uses an array instead of objectto keep list of items with random numerical keys. I told him you’re creating multiple unintended undefined members in between, he said: yeah that’s how silly JavaScript is :-|

Ever wanted to have undefined behavior in Python? Do this in Python 2 (yes this was supposed to be a fibonacci number calculator with a limit but one of my classmates forgot the conversion just as seen below):
#Begin
def fib(n):
a,b=0,1
while a<n:
print a
a,b=b,a+b

fib(raw_input)
#End

When someone defines a Bool3 type in swift to represent true, false and undefined. Even tho swift already has Optionals as a first class feature. 😳

pretty much

Fatal Error: Cannot read property 'value' of undefined

😥🔫

Deleting linked in account. Permanently.

Apparently, too lazy to define a function.

Honestly can't tell if this is a brilliant Easter Egg or an actual bug

Today i spent one hour and half trying to understand why my ajax request was returning "undefined" instead of a json object. It turns out i had just to restart ionic because of some bug in the ts transpiler.

Fuck you typescript.

I can see you, React Native 👀

A post today made me think about this interview I had about a year ago... I shall tell you all about it.

Went to a hiring event for this company everyone was cool but this one guy (who would have been my boss) was a total arrogant, douchey, know it all.

So anyways cue interviewing with him a week later. He says if I give you task A, B, C and they need to be done by the end of the week in which order do you do them. (Note: he literally said abc not actual tasks)

Me: I don't really know how to answer that question without more information.

Him: Well I like to see how people answer it... So think about it for a second.

Me: Ok I guess if doing one task would help me do the next task faster I would do it in that order. Like I can use code or concepts from C to do B faster.

Him: What if A would take 2 days and B and C would take 1 day.

Me: I don't see how that would influence the order I do them in.

Him: Would you complete one task after another or switch between them or do see simultaneously.

Me: It would depend on my previous answer and what would be the fastest way to get them done but without more info I literally cannot give you an answer of like I would do B, C, A.

Him: Would you do the longest task first or the shorter tasks.

Me: I don't know I guess it depends on if it would help you or somebody else move forward with something if I got a particular task or the shorter tasks done first.

So cue more of this kind of back and forth about arbitrary details about undefined theoretical tasks for like 10 minutes.

Suffice is to say I didn't get the job and I'm glad.

Why are some of my previous rants tagged with "undefined"? I definitely don't remember doing that 🤔

What is NaN?
Baby, don't undefined me...
Don't null me...
No false.

var myLove =0;
var myLife = 'you';

if(yourHeart =='Me'){
myLove =+1;
else {
myLife = null;
myLove = undefined;
}

VirusTotal's API could do with a make over.

Though it is quite nice actually, you're able to provide them with a hash of a file and (provided they've scanned it) VT is able to tell you what up to 60 different virus scanners thinks about the file (and how many scanners that has an opinion about it). Now if there's an error, like the file not having been scanned or the hash being incomplete, it give you some JSON back where there will be an error message that tells you the error and an error code of 0.. wait wh

Although since it's an API they also need give us plebs whose only got access to an API key that limits us to 4 requests pr minutes. Naturally when you try to do another request within a minute of your limit the response you get is absolutely nothing what so ever. "" Naturally.

And of course the same response should be given when the API key you provide isn't valid. Who needs errors amiright?

No wonder JSON.parse kept throwing exceptions

OKAY WHAT THE FUCK JAVA.

At school we were assigned the task to do Huffman's algorithm. Since I am way ahead of all the others, I made a GUI for that. (Btw, we use BlueJ for Java, it's just painful)
Now... I made a JTextField to put the output, which would be any character from 0x0 to 0xFFFF, into it.
Apparently, there is a bug in the setText method, which throws random NullPointerExceptions right into your face if you give it those Unicode characters.
So I looked it up:
It was a Bug, in JDK 1.6.something, where putting a 0xFFFF together with a 0x10000 would cause this. Now you may think, do we still have 1.6? No, we have 1.8 v171, WHY THE FUCK DOES THIS SHIT GIVE ME A NPE?! THE WORST PART IS I CAN'T DO ANYTHING ABOUT IT!
AND IT HAS THE WORST UNDEFINED BEHAVIOR:
1. NPE, nothing else happens
2. The Text box just gets invisible, but the border stays visible + NPE
3. The box completely disappears + NPE

Try-catching it doesn't do anything, everytime I fill the box with text, one of those options happens, and the box was never to be seen again! NOT EVEN CREATING A NEW TEXT BOX AND ADDING IT TO MY WINDOW WORKS.

Node: The most passive aggressive language I've had the displeasure of programming in.

Reference an undefined variable in a module? Prepare to waste your time hunting for it, because the runtime won't tell you about it until you reference a property or method on the quietly undefined module object.

Think you know how promises work? As a hiring manager, I've found that less than 5% of otherwise well-experienced devs are out of the Dunning Kruger danger zone.

Async causes edge cases and extra dev effort that add to the effort required to make a quality product.

Got a bug in one of your modules? Prepare yourself for some downtime because a single misplaced parentheses can take out the entire Node process, killing unrelated pages and even static file hosting.

All this makes for a programming experience that demands much higher cognitive load, creates more categories of bugs, and leads to code bloat/smell much more quickly than other commonly substituted languages.

From a business perspective, the money you save on scaling (assuming your app is more compute efficient under Node) is wasted on salaries and opportunity costs stemming from longer dev time, more QA, and more frequent outages.

IMO, Node is an awesome experiment, a fun language, a great tool for specific use cases, and a terrible fucking choice for an entire website.

During my first semester of CS we were mostly using MatLab for basal scripting - assigning variables, learning about scope, that type of thing. I was excited to start learning programming but wanted to actually make something rather than reversing arrays and incrementing counters for weeks.

I discovered the image() function which takes a float[][] matrix and displays it as an image. I generated my arrays of random numbers and made a simple nested loop where I iterated over each element, averaging it with its neighbours, and - it worked on the first run! I made a freaking noise and blur filter!

That rush of planning it out, making it, and seeing it work I think is my main drive in coding. All the hours of undefined-but-they-are-tho import paths and mystery segfaults are worth it once there is that moment of "it lives!".

If only ther is a tv show called undefined is the new null

I recently started learning Erlang. This is the story of how I got trapped into it.

When I code, I usually use my trusty text editor and a terminal to either compile my code or run tests in the language interpreter. The interpreter, erl, works fine, but when I wanted to close it, I ran into a small issue.
Because I never know what the command is to close an interpreter, I usually use the EOF character (^D), that is widely recognized. Except erl does not react to it, not even a tiny message saying it won't close or doesn't recognize the output.
Alright then, let's try quit. That's an atom, it does not behave how I want.
quit() is an undefined shell command, exit() terminates the shell process but the interpreter automatically starts a new one...
But I get the welcome message, telling me to abort with ^G! Some progress, finally... except ^G redirects from Erlang interpreter to user switch command. Damn, another interpreter...

I ended up killing the process from an other terminal.

I woke up this morning thinking "what if Trovalds doesn't GPL-released Linux" and i got like all:

Edit:
*Shooting stars music
:v

Run-time error occured in file: undefined at line: undefined and column: undefined

When you check whether Carphone Warehouse stocks the phone you want to buy. Well, bloody undefined! 😳 Some other weird shit is going on with this UI. 🤷‍♂️

How to get your website reach out people with no advertisements!?

1. Once it's built, make another mock up by changing a few main highlighted words to "(null)" or undefined!

2. Then send the link to any person in the software development field, anonymously!

That person will take care of the rest!

Note: don't forget to change the mock up with the original after u have sent the link!

Undefined radio DJ

"Undefined behaviour" is real and can be VERY "undefined"

And just when my boss thought I was done with spending too much time on StackOverflow, I discover devRant.

Real story:
Started fixing one file in one repo, build, doesn't build, go into other repo fix just one file there, but first I need to make myself a toolchain, making of toolchain fails because it depends on some dirty fix in the file I was fixing, refactor and clean that to a proper state, fuck yeah toolchain builds, source toolchain run make now, breaks with undefined reference, no time to debug plus fuck this automake, remove it, make a makefile, builds fuck yeah, shit now unittest are failing because why not, refactored that makefile as well, everything compiles, automate the test fully so that they are ran on the target out of make just because I'm a nice guy, fuck yeah everything works, commit this repo, commit other repo, review time, one of the guys gave up, the other one did it properly, found some shit there, fix that, done, merge, triggers CI fucking pass

All of this was done in 3h, Talk about efficiency

I was in dependency hell for two days.
Im a junior working in a team creating an ember app. Suddenly a main component refuses to work since an addon threw "EmberObject undefined"... Nobody could reproduce it and we where out of ideas, so I tried fixing it for 2days (7h total). I finally got it working after updating yarn :D
It never felt so good working again :)

Prefer if(typeof variable != "undefined") over if(variable)

var self = this;
console.log(self); // undefined

What you guys think someone with a IQ of 10000 can do?

Hey, I have a cool idea about a new way to solve a problem our users are having!
Type type type, now I have a working prototype! Show it to the team, everyone loves it. Polish it a little, it works really great!
Now let's test it on an iPad like the ones our users have... Nope, nothing works, undefined is not a function.

F*CK YOU SAFARI, you're why we can't have nice things. 😤

* Customer reports bug.
* I fix the bug.
* This highlights another issue that I haven't got enough resources to fix.
* I revert the fix.
* <insert hacky workaround here>

We have code that invokes undefined behaviour (freeing memory twice), but somehow people have managed to build around it and now it depends upon it to work.

FML.

Poll: I see a lot of Windows users here, naturally as it's the dominant OS. I do wonder how many of you dev's that would be willing to accept lower compensation in exchange for instead working in Linux?

MMMM

Why the actual FUCK does PHP not throw errors for undefined variables.

FUCK

I've spent more time going through code (mine and others) to find mispelled variables than actually fucking writing code. One poor bastard had a delete statement, and a where clause in another variable, which he mistyped. Oops.

CRASH DAMMIT, LET ME KNOW.

aAAAaAaaaaaAAAA

'Undefined' is not a function

that moment at work when your boss asks you do something that has not been defined as your 'function'

Thinking how the fuck did the variable became undefined and realizing you defined the variable in an asynchronous rest call...

I've come to realize that when I get annoyed, it's usually because my lack of tolerance that is the problem. Annoying co workers is the perfect self improvement tool.

How to run PHP in a container :
1. Begin a docker file for an existing php cron app (when all you know is php, everything looks like a php app)
2. Set the FROM.. Apt get update .. Do composer install
3. Builds the image
4. Discover I need git
5. Add git to apt get install step
6. Builds the image
7. Launch the php script
8. Fatal : use of undefined constant SOL_UDP
9. Opens the source code of the third party. The there's no mention of where that constant is from.
10. Spend many minutes online to find what's missing.
11. Find the PHP sockets page about that option. Digs into the documentation to find out that's missing from the installed PHP.
12. Find out I need to add a step to install the socket extension in my docker file.
13. Build the image again
14. Execute it, finally it works
15. Remember why I hate php
(for brevity I've omitted the even more complex part of having to set up zlib)

How to install node js in a container image:
FROM node:8
ADD package.json
RUN npm install

"undefined is not a function"

Access undefined as undefined....
Apple devs need a break. Xcode devs need to be sent to another planet -_-

This is something that I hadn't done or that directly impacted me, but that had an effect in my life several years after it happened.
It's one of those stories that you think "this only happens to others", and then someday you're the "others".

So when I was born, I was, naturally, registered on the health care system. My parents chose an uncommon name for me (uncommon in my country) so I think I wasn't registered by the time of my birth, but 4 months later when all the bureaucratic crap came to an end (long story short, the guy that was there when it started died and my parents had to wait 4 months for another person to be appointed). So, when my parents finally went to register me, apparently, for some reason, the computer took my name and assumed it was a male name. As I've said, my name is uncommon in my country, there're probably 3 or 4 people with the same name here in Portugal.
Why did the computer assume it was a male name AND why didn't nobody check that? Since my parents had to ask to government entities to let them name me that name, I'm assuming it wasn't in their db. So why did it assume male? Was it purposely programmed that, by default, all "newly-registered" names were to be male? Was it random? Who the hell knows.
And how did nobody check that, every time I went to take vaccines? I don't think anyone told my mom that everytime we went there that the data was wrong, otherwise the situation wouldn't have lasted for 14 years.
We only knew about that mishap when it was time I had to take vaccines specifically for women and that I wasn't being noticed of it even though a friend 1y younger than me had already taken hers.

I find this story amusing but now that I started thinking about how it came to life (no pun intended) I'm actually a bit pissed off about how they didn't think of uncommon names and that how that could affect their registry in the system. They could have - IDK - placed "undefined" in that field so that it would caught the register's attention.
Moral of the story: don't assume stuff :v

What is the "undefined" category?._.

IF YOU WANT MULTIPLE COMPOSER FILES PER ENVIRONMENT AND NO LOCK FILE YOU HAVE NO IDEA HOW COMPOSER WORKS!

mov al, [var]

var db 07h

Error on line 1: undefined operation size.

Silly me defining a byte, using mov on a byte-wide register with said byte-wide variable. What size it could be, the byte-wide variable is soo fucken unknown i'm so sorry.

Expected: an object with {[object Object]: defined}
but: [object Object] was undefined

Sooo, I just noticed this on my older posts

Fuck javascript and it's `undefined` property

Fixing the freezer

Now which one do I click? 🤔

Funny article and perfect placement of undefined.

Coworker: "Undefined Fuck you!"
Me: "Well if it's undefined you should probably store 'fuck you' somewhere"

undefined = true

Some people just want to watch the world burn..

Focused on debugging Javascript after being asked for help. Original developer narrowed it down to an if statement. It was acting like the if statement was assigning the variable and causing undefined. Tested console.log before evaluation. Tried !== instead of != and same thing. Even swapped undefined and variable so it would try to assign a variable named undefined instead... It took way too long for the both of us to realize the word "let" in front of the variable on the line withing the if statement block... It overwrite the variable the moment it entered the block.... FML.

The crown definitely goes to whenever I have to deal with dates/time/calendars/timezones across platforms and/or systems... Always makes me doubt those 10+ years of experience...

<?php
// This is the demo code of a PHP gotcha which took me some hours to figure out

$hr = "\n<hr>\n";
$JSON = '{"2":"Element Foo","3":"Element Bar","Test":"Works"}';
$array = (array)json_decode($JSON);

echo "Version: " . phpversion() . $hr;
// Tested on: 5.5.35 and 7.0.15

var_dump($array);
// Prints: array(3) { '2' => string(11) "Element Foo" '3' => string(11) "Element Bar" 'Test' => string(5) "Works" }

echo $hr;

var_dump($array['Test']);
// Prints: string(5) "Works"

echo $hr;

var_dump($array[2]);
var_dump($array['2']);
var_dump($array["2"]);
var_dump($array[3]);
var_dump($array['3']);
var_dump($array["3"]);
// Prints: NULL + Notice: Undefined offset ... in ...

echo $hr;

$newArray = array();
foreach ($array as $key => $value) $newArray[$key] = $value;

var_dump($newArray[2]);
var_dump($newArray['2']);
var_dump($newArray["2"]);
// Prints three times: string(11) "Element Foo"

var_dump($newArray[3]);
var_dump($newArray['3']);
var_dump($newArray["3"]);
// Prints three times: string(11) "Element Bar"

$ = undefined. Watch and enjoy 😂

When console.log is undefined. Thankfully I don't need to support versions of IE that old anymore.

Q: What does JavaScript have that other languages don't?

A: undefined

For f***s sake, use fetch and merge, /not/ pull.

I am going to set up my own mini company and I am wondering about the name I will choose. Definitely want something strange and sarcastic like "undefined" or "null"...but these two are already taken? I was thinking about "1;DROP TABLE users" but it is too long. Any ideas out there? xD

What happens and why

Problems with Dynamic typing (eyyy JS)
0 < undefined // false
0 == undefined // false
0 > undefined // false

void 0 //undefined
let undefined = 1

Turns out undefined is not reserved in JS

I expect somebody else has chosen this as well, but anyway:

Async.<any-function>, cause they brought me out of callback hell and taught me the undefined ways async...arghhhh fuck

So at the HS I go to, there are 4~5 programmers (only 3 real "experienced" ones though including me).

So coming from JS & Python, I hate Java (especially for robotics) and prefer C++ (through some basic tutorials).

Programmer Nº2 is great at everything, loves Objective-C, Swift, Python, and to a certain extent Java.

Programmer Nº3 loves Python and used to do lots of C#, dislikes Java and appreciates Go (not much experience).

So naturally I get shit on (playfully) because of my JS background, because they don't understand many aspects of it. They hate the DOM manipulation (which is dislike too tbh), but especially OOP in JS, string/int manipulation, certain methods and HOISTING.

So, IDK if Java or C++ (super limited in them) have hoisting, but if you don't know what hoisting is, it means that you can define a variable, use it before assigning a value, and the code will still run. It also means that you can use a variable before defining it and assigning a value to it.

So in JS you can define a variable, assign no value to it, use it in a function for instance, and then assign a value after calling the function, like so:

var y;
function hi(x) {
console.log(y + " " + x);
y = "hi";
}
hi("bob");

output: undefined bob

And, as said before, you can use a variable before defining it - without causing any errors.
Since I can barely express myself, here is an example:
JS code:

function hi(x) {
console.log(y + " " + x);
var y = "hi";
}
hi("bob");

output: undefined bob

So my friends are like: WTF?? Doesn't that produce an Error of some sort?
- Well no kiddo, it might not make sense to you, and you can trash talk JS and its architecture all you want, but this somehow, sometimes IS useful.

No real point/punchline to this story, but it makes me laugh (internally), and since I really want to say it and my family is shit with computers, I posted it here.

I know many of you hate JS BTW, so I'm prepared to get trashed/downvoted back to the Earth's crust like a StackOverflow question.

I don't think 10 game credits are enough.

(This message is there for at least a year now)

Digging through some ancient code... Why is it called common sense when it's not common at all?

An undefined ArrayList coupled with NullPointerExceptions because of it really know how to raise your blood pressure up.

Spent almost 1 hour trying to figure out why and all I needed to do was look a couple lines above.

But I guess that's what 4am development is all about

How do you know that you are stuck in a job without longterm perspective (besides some undefined gut feeling)?

And what to do then? It seems to me, only possible action is to change job. Is there any, less extreme, alternative?

What the f*...

SomeType {
var something = {
somethingElse: "blah",
whatever: "halb"
}
var doStuff = function() {
this.something.whatever = "foo";
}
}

Based on what fucking logic are you claiming "something" is _undefined_ while running doStuff()??? What the fuck is wrong with you??? It's a freakin' static context!!!! "SOMETHING" IS DESIGNED TO BE DEFINED ! ! ! ! !

Why the pointer of member function so special.

trying make a non-template class that like std::function but simpler:
1. wrap static function pointer.
2. wrap class member function pointer and the class object pointer.
3. WITHOUT ALLOCATE MEMORY.

I can't store member function pointer because the size is undefined?!

This is kind of an issue for my family tree website. I'll have to ban you, Tyler

try{
If(!res || typeof res == undefined || res == undefined){}
}catch(err){
// you just had to throw an error
}

Spend the whole day trying to figure out why that API call returns undefined...
Whitespace character after the variable

Oh lord, may all GUI's come alive and eat their users, disintegrate their dev's and finally burst into flames and leave nothing but ashes.

Anyone else seeing undefined in the tags for many rants? 🤔

(Fork of the current Chuck Norris wave)
Jack Bauer can assign values to undefined variables just yelling "Gimme a name!!!!"

Me, week 2 at new job, meeting with a separate team of fellow Python users: "Hey what software tests do you have for this? I am interested to learn your testing structure."
Dev1: "We don't really have any."
Dev2: "I have a Ruby script that tests this one thing."
Dev3: "why did you do it in Ruby? Why not Python?"
Dev2: "oh well Dev4 started in Ruby."
Me: 😅
Me: *this is going to blow up but I am too new to tell them what to do*

Last week, these guys messed up 500 files in production with "undefined" in the filenames. 😣 I think it's time to introduce them to tests...