*On a programming support forum*

Guy: My compiler keeps throwing null pointer exception at line 128.
Me: Ok. Can you post your code real quick so I could figure out what is null at line 128?
Guy: No I'm not going to show my code to someone on the internet. What if you want to steal my code?
My mind: "Dude wtf why would I steal someone's code on a support forum?"
Me: *Use the next 15 minutes explaining that showing the code is necessary so that others can actually help him, and that no one on a support forum is going to steal his code.*
Guy: "You know what I'm more convinced that you want to copy my code. I might as well just try to fix this on my own."

What?

Do you have a spare usb phone cable?
I have but I'm using it to charge my phone

Do you have a spare laser pointer for my presentation?
Sorry, I don't

Do you have a spare mouse?
No :)

Sometimes things become a little weird

Do you have a spare keyboard?
No sorry. :/

Do you have a spare monitor?
:/

Do you have a spare computer?
what?

Do you have a spare mac?
>:(

Do you have two spare computers and one printer for each? Would be nice for the conference that we are going to hold tomorrow if someone need to print.
What's wrong with you people. I'm just a developer, not a fucking warehouse

Someone on a C++ learning and help discord wanted to know why the following was causing issues.

char * get_some_data() {
char buffer[1000];
init_buffer(&buffer[0]);
return &buffer[0];
}

I told them they were returning a pointer to a stack allocated memory region. They were confused, didn't know what I was talking about.

I pointed them to two pretty decently written and succinct articles, the first about stack vs. heap, and the second describing the theory of ownership and lifetimes. I instructed to give them a read, and to try to understand them as best as possible, and to ping me with any questions. Then I promised to explain their exact issue.

Silence for maybe five minutes. They disregard the articles, post other code saying "maybe it's because of this...". I quickly pointed them back at their original code (the above) and said this is 100% an issue you're facing. "Have you read the articles?"

"Nope" they said, "I just skimmed through them, can you tell me what's wrong with my code?"

Someone else chimed in and said "you need to just use malloc()." In a C++ room, no less.

I said "@OtherGuy please don't blindly instruct people to allocate memory on the heap if they do not understand what the heap is. They need to understand the concepts and the problems before learning how C++ approaches the solution."

I was quickly PM'd by one of the server's mods and told that I was being unhelpful and that I needed to reconsider my tone.

Fuck this industry. I'm getting so sick of it.

One of the morons said today that we should use C because you don't need to "apply logic" in Python. Everything is automated in python. Fucking morons............

It doesn't ends here. One of the "9 pointers gang" student raised an objection. I was happy untill he said that there is no boolean datatype in C. I literally shouted "Shut up, morons. There is a whole fucking library dedicated to it." in a class of 60 students.

Don't know how I survived 3 years here. And more importantly, don't know how will I survive my next year.

P.S.: the 9 pointer guy who raised the objection, once asked me whether chrome is developed and maintained by Google?

CHILD: But how can Santa deliver toys to every little boy and girl on his list in one night?
MEH: (laughs) It's quite simple. The items on Santa's list are called blocks, and each block in his "blockchain" typically contains a hash pointer, a timestamp, and transaction data...

if you were code, you wouldn't compile

I wouldn't catch you if you were the last exception in my code

your brain is so tiny, indexing it would make no significant performance gain

you are so embarrassing, I can only go out with you in SSL

if you were a pointer I'd move to java

When you introduce your girlfriend to your Best friend and after some time they start dating each other and you are unaware of the situation but after sometime you get to know about their relationship , now you're really pissed and want to take revenge, then you remember that the girl's parents are strict af and you know that they won't tolerate that their daughter is in relationship
so, you tell her parents about her and
they decide to send her to a different school located in another city
The End

tl;dr
When two pointers are pointing to a same memory location then if any one of them deallocates the memory, the other pointer becomes a dangling pointer
:v

Applying to a school for CS major, and they can't even fix their website to not have a null pointer exception...

Do I really want to go here?

A fly landed on my screen. I spend the last hour to try and train it to follow my mouse pointer xD

So im here with this lovely girl on my chest and all i can think of is why i got a Null Pointer exception and why in the fudge im lying here with this woman instead of fixing that.

Oh, maybe its because i spend 27 hours of the available 24 hours in a freakin day writing code whilst struggling to give her attention. She deserves this moment. She's my best Fragment...Friend, she's my best Friend.

Google Duplex: "Hi! Uhm.. I'd like to make a dinner reservation for 3."
Restaurant: "Sure! What time would you like?"
Google Duplex: "It's, uhh.. for tomorrow May the 11th at NULL POINTER EXCEPTION."
Restaurant: "Internal Exception: Invalid parameter not satisfying: time"

Btw, hi devRant, this is my first post!!

FUCK! agshdklgdahgisdahl;k!

I just spent 45 FUCKING MINUTES debugging try to figure out WHY THE HELL a function that is supposed to return either a pointer to a valid object OR ZERO if a valid object is not found, was RETURNING FUCKING EIGHT!

Then I saw it... I typed:
nodeList[index];
instead of:
return nodeList[index];

It took me looking at a stack trace and a disassembly of the function to realize this.

Can't wait for this three-day weekend...

Interesting bug hunt!

Got called in because a co-team had a strange bug and couldn't make sense of it. After a compiler update, things had stopped working.

They had already hunted down the bug to something equivalent to the screenshot and put a breakpoint on the if-statement. The memory window showed the memory content, and it was indeed 42. However, the debugger would still jump over do_stuff(), both in single step and when setting a breakpoint on the function call. Very unusual, but the rest worked.

Looking closer, I noticed that the pointer's content was an odd number, but was supposed to be of type uint32_t *. So I dug out the controller's manual and looked up the instruction set what it would do with a 32 bit load from an unaligned address: the most braindead thing possible, it would just ignore the lowest two address bits. So the actual load happened from a different address, that's why the comparison failed.

I think the debugger fetched the memory content bytewise because that would work for any kind of data structure with only one code path, that's how it bypassed the alignment issue. Nice pitfall!

Investigating further why the pointer was off, it turned out that it pointed into an underlying array of type char. The offset into the array was correctly divisible by 4, but the beginning had no alignment, and a char array doesn't need one. I checked the mapfiles and indeed, the old compiler had put the array to a 4 byte boundary and the new one didn't.

Sure enough, after giving the array a 4 byte alignment directive, the code worked as intended.

I could bitch about XSLT again, as that was certainly painful, but that’s less about learning a skill and more about understanding someone else’s mental diarrhea, so let me pick something else.

My most painful learning experience was probably pointers, but not pointers in the usual sense of `char *ptr` in C and how they’re totally confusing at first. I mean, it was that too, but in addition it was how I had absolutely none of the background needed to understand them, not having any learning material (nor guidance), nor even a typical compiler to tell me what i was doing wrong — and on top of all of that, only being able to run code on a device that would crash/halt/freak out whenever i made a mistake. It was an absolute nightmare.

Here’s the story:

Someone gave me the game RACE for my TI-83 calculator, but it turned out to be an unlocked version, which means I could edit it and see the code. I discovered this later on by accident while trying to play it during class, and when I looked at it, all I saw was incomprehensible garbage. I closed it, and the game no longer worked. Looking back I must have changed something, but then I thought it was just magic. It took me a long time to get curious enough to look at it again.

But in the meantime, I ended up played with these “programs” a little, and made some really simple ones, and later some somewhat complex ones. So the next time I opened RACE again I kind of understood what it was doing.

Moving on, I spent a year learning TI-Basic, and eventually reached the limit of what it could do. Along the way, I learned that all of the really amazing games/utilities that were incredibly fast, had greyscale graphics, lowercase text, no runtime indicator, etc. were written in “Assembly,” so naturally I wanted to use that, too.

I had no idea what it was, but it was the obvious next step for me, so I started teaching myself. It was z80 Assembly, and there was practically no documents, resources, nothing helpful online.

I found the specs, and a few terrible docs and other sources, but with only one year of programming experience, I didn’t really understand what they were telling me. This was before stackoverflow, etc., too, so what little help I found was mostly from forum posts, IRC (mostly got ignored or made fun of), and reading other people’s source when I could find it. And usually that was less than clear.

And here’s where we dive into the specifics. Starting with so little experience, and in TI-Basic of all things, meant I had zero understanding of pointers, memory and addresses, the stack, heap, data structures, interrupts, clocks, etc. I had mastered everything TI-Basic offered, which astoundingly included arrays and matrices (six of each), but it hid everything else except basic logic and flow control. (No, there weren’t even functions; it has labels and goto.) It has 27 numeric variables (A-Z and theta, can store either float or complex numbers), 8 Lists (numeric arrays), 6 matricies (2d numeric arrays), 10 strings, and a few other things like “equations” and literal bitmap pictures.

Soo… I went from knowing only that to learning pointers. And pointer math. And data structures. And pointers to pointers, and the stack, and function calls, and all that goodness. And remember, I was learning and writing all of this in plain Assembly, in notepad (or on paper at school), not in C or C++ with a teacher, a textbook, SO, and an intelligent compiler with its incredibly helpful type checking and warnings. Just raw trial and error. I learned what I could from whatever cryptic sources I could find (and understand) online, and applied it.

But actually using what I learned? If a pointer was wrong, it resulted in unexpected behavior, memory corruption, freezes, etc. I didn’t have a debugger, an emulator, etc. I had notepad, the barebones compiler, and my calculator.

Also, iterating meant changing my code, recompiling, factory resetting my calculator (removing the battery for 30+ sec) because bugs usually froze it or corrupted something, then transferring the new program over, and finally running it. It was soo slowwwww. But I made steady progress.

Painful learning experience? Check.
Pointer hell? Absolutely.

Definitely Rust, and a bit Haskell.

Rust has made me much more conscious of data ownership through a program, to the point that any C/C++ function I wrote that takes a pointer nowadays gets a comment on ownership.

I wish it was a bit less pedantic about generics sometimes, which is why I've started working on a "less pedantic rust", where generics are done through multiple dispatch à la Julia, but still monomorphising everything I can. I've only started this week, but I already have a tokenizer and most of the type inference system (an SLD tree) ready. Next up is the borrow checker and parsing the tokenized input to whatever the type inference and borrow checker need to work with, and of course actual code generation...

Haskell is my first FP language, and introduced me to some FP patterns which, turns out, are super useful even with less FP languages.

Uh-oh shit went wrong with umpteen thousand jobs in a pointer heavy, multi-threaded application in raw C. Fuck, some pointer gone wild?!

30 minutes later, after trying to find out how many jobs it takes to start failing. Noticed that it's about the default settings. Wait what? That's where the realloc'ing should kick in, check that.

Aahhhh. Maybe I shouldn't zero the whole buffer after realloc, just the new part. D'uh!

I would love to see those that say:
Unused RAM is wasted RAM

There you go, used every fucking possible bit to a point mouse pointer doesn't fucking move.

Fucking hate when people say that, and don't be funny and throw a comment about those 300MB are wasted .. blah blah blah.... Yaaaa fuck off.

Ok, so teacher (which should be something like a professional dev or whatever) assigned us a homework for a Christmas (I dont care, I can complete his assignments in like 10 minutes max). We have to do some simple shit in C++, just some loops and input + output. Nothing hard. He challenged me to write it as short as possible, so I did. My classmates have codes around 60 to 70 lines long (after propper formating). I made it 20 lines long using some pointer magic and stuff like that. I tried my code, it ran fucking perfectly, so I sent that to him. He replied that the code does not work. I tried to recompile it and it ran perfectly. Again, it does not work. Afeter 13 fucking emails he fucking finally sent me the error message. Some fucntion was not found (missing some library but literally everywhere else it works without it...). Thats strange, because it run perfectly on my Fedora with CLion, so I switch to Windows and try to run same code in Visual Studio (which we are using in school btw). Works perfectly. So I start arguing with the teacher more and more. I tried around 10 online compilers. Works fuckng everywhere. Teacher is pissed, me too. So I rewrote my whole code, added comments and shit, reinvented wheel literally everywhere. Now I have C99 standardised code over 370 lines long that run even on a fucking arduino after changing input output methods so it can work with it. It (suprisingly runs) on his PC too.

After a bit more arguing, he said that he is using CodeBlocks from fucking 2015. Wow. Just fucking wow. Even our school has some old Visual Studio (2007 I guess) and it worked there.

An intern who tries not to show that he doesn't know shit has been asked for fun:

"What's the difference between a pointer and a thread?"

He answered: "I don't know, I am not experienced enough in oriented object programming".

Seriously. Bullshiting has gone too far.

Some websites are a disgrace to the internet and I wish there was a service that terminates them on a daily basis.

Really though, can you do some simple research about your users and see what will make their life easy?

You put the most important button of your website in a place where the I have to scroll down and looks for it. The beginning of your page has a stock picture that has no meaning or relevance to the topic of your page. WHAT THE FUCK IS WRONG WITH YOU?

And your button, it doesn't even look like a fucking button. It looks like a normal text, which doesn't even react to hovering. At least change the cursor to pointer so that I can understand that it's a button.

Fuck you, your button and your useless stock picture.

Oh yes, today was a fugly nice day.
Fuck you my dear boss.
Your mindless way of taking a dump onto my code, moving my classes (CSS) away and adding new classes to refuck my unfucked fuckery clearly shows how much brain is left in your hollow skull of nothingness.

It took me only 2.5 hours of my precious time to unfuck your refucked fuckery and implement the fix you wanted me to do because you fucked up my code.

Go eat a bag of segfaults and get cast to void* (void pointer).
I am also very thankful having spent the whole day today to fix cross browser fuckups, hacks and #!&$+@.

Normally I really like my boss. He is a cool guy and an innovative and mostly intelligent person.
BUT FUCK HIS CODE.

We were in a c class learning about pointers, the teacher was doing small stars on the board to explain the basics of them.

After a short while we all understood, or so we taught.

Someone asked about double pointers, so the teacher put 2 stars on the board to explain. THEN THE IDIOT OF THE CLASS GOES AND BLOODY ASKS IF WE COULD REPLACE THE 2 STARS BY A BIG ONE.

I MEAN OF COURSE JUST PUT A STAR EMOJI TO MAKE A DOUBLE POINTER.

The legend still lives on as he got kicked for an unknown reason🤔.

I spent 4 hours finding a good way to instanciate golang structures. Came up with a function that returned a value or pointer and I just kept reusing the nomenclature for an entire project. Then my buddy looks over and goes, "Ethan, you're a f****** idiot", and shows me the standard nomenclature. Now I have to refactor my entire project. FML.

(Edit: typo)

Today I experienced cruelty of C and mercy of Sublime and SublimeLinter.

So yesterday I was programming late at night for my uni homework in C. So I had this struct:

typedef struct {
int borrowed;
int user_id;
int book_id;
unsigned long long date;
} entry;

and I created an array of this entry like this:

entry *arr = (entry*) malloc (sizeof(arr) * n);

and my program compiled. But at the output, there was something strange...

There were some weird hexadecimal characters at the beginning but then there was normal output. So late at night, I thought that something is wrong with printf statement and I went googling... and after 2 hours I didn't found anything. In this 2 hours, I also tried to change scanf statement if maybe I was reading the wrong way. But nothing worked. But then I tried to type input in the console (before I was reading from a file and saving output in a file). And it outputted right answer!!! AT THAT POINT I WAS DONE!!! I SAID FUCK THIS SHIT I AM GOING TO SLEEP.

So this morning I continued to work on homework and tried on my other computer with other distro to see if there is the same problem. And it was..

So then I noticed that my sublime lint has some interesting warning in this line
entry *arr = (entry*) malloc (sizeof(arr) * n);
Before I thought that is just some random indentation or something but then I saw a message: Size of pointer 'arr' is used instead of its data.

AND IT STRUCT ME LIKE LIGHTNING.

I just changed this line to this:
entry *arr = (entry*) malloc (sizeof(entry) * n);

And It all worked fine. At that moment I was so happy and so angry at myself.

Lesson learned for next time: Don't program late at night especially in C and check SublimeLInter messages.

Coding lessons 101, it shouldn't be that fucking hard to understand what a pointer is but that's where we currently stand

Found this little gem in the AMD64 reference manual:

"When PCIDs are enabled the system software can store 12-bit PCIDs in CR3 for different address spaces. Subsequently, when system software switches address spaces (**by writing the page table base pointer in CR3[62:12]**), the processor **may use TLB mappings previously stored for that address space and PCID**".

later:

"Updates to the CR3 register cause the entire TLB to be invalidated except for global pages."

So let me get this straight: PCIDs allow you to reuse TLB entries (instead of flushing the entire TLB) when writing a new address space to CR3 but writing to CR3 always flushes the entire TLB anyways

Just why 🤦‍♂️

Being a programmer in a scientific discipline can be infuriating.

using "no one" ="almost no one"
using everyone = "almost everyone"

1. No one knows what even the very idea of good practice is. And everyone refuses to learn. 3k lines of repetitive copy pasted main. 500 lines of plotting method.

2. Raw C-style pointer based array creation. Won't use develope array libraries because what if development stops. FUCKING HAVE YOU SEEN YOUR CODE WHAT IF DEVELOPMENT ON YOUR CODE STOPS. FUCK.

3. LOOP VARIABLES DECLARED AT THE BEGINNING OF THE METHOD WHY.

4. Everyone wants to make modular, independent code. No one wants to use OOP. NOPE. ALL IN ONE FILE. WRITE C++ LIKE A FUCKING PYTHON NOTEBOOK. FUCK.

5. LIBRARIES OH MY GOD PLEASE DO NOT CODE UP YOUR MATRIX MULTIPLICATION. PLEASE DO NOT TRIPLE LOOP IT. NO. THE LINEAR ALGEBRA LIBRARY WILL STAY IN DEVELOPMENT.

6. Please realize that literally not one comment over an 1800 line file does not help anyone.

FUCKING. WHY. WHY ARE WE SCIENTISTS SO GOOD AT SCIENCE AND SO FUCKING SHIT AT THE CODE THAT MAKES OUR SCIENCE HAPPEN. WHY. FUCKING. WHY. FUCK.

!rant !!question !!rantNow

Stackoverflow and the internets has failed me, so I thought maybe someone here could throw a pointer 🤞

Has anyone managed to get a hackintosh working in VirtualBox 5 with a decent screen resolution beyond 1024x768?

I’ve tried the usual vboxmanager ways of setting the gopMode and customRes but the damn thing won’t budge.

I’m starting to think VMWare may be the way to go for this thing😪

Probably the MOST complete software book on a very broad subject.

This is book to read for those of you are near college grad, first job in the industry. But to the level of detail and broad coverage this book has I think it’s actually a great book for everyone in the industry almost as a “baseline”

From requirements, project planning, workflow paradigms. Software Architecture design, variable naming, refactoring, testing, releasing the book covers everything, not only high level but also in reference to C.

Why C ...because in the consumer electronics, automotive industry, medical electronics and other industries creating physical products c is the language of choice, no changing that. BUT it’s not a C book... it contains C and goes into dept into C but it’s not a C book, C is more like a vehicle for the book, because there are long established, successful industry’s built around it. Plenty of examples.

When I say it’s the most complete on a broad subject seriously like example the chapter about the C language is not a brief over like many other books, for example 10 pages alone are dedicated to just pointer! Many C books have only a few paragraphs on the subject. This goes on depth.

Other topics, recursion, how to write documentation for your code.

Lots of detail and philosophy of the construction of software.

Even if you are a veteran software engineer you could probably learn a thing or two from the book.

It’s not book that you can finish in weekend, unless you can read and comprehend over 1000 pages.

Very few books cover such a broad topic ALL while still going into great detail on those subtopics. the second part is what lacks in most “broad topic books” ..

Code Complete.. is definitely “Complete”

So the image doesn’t match the rest of my book images because I tried to make an amage to cover of the book, inception style kinda haha 😂

Empty your memory,
with a free(),
like a pointer.

If you cast a pointer to an integer,
it becomes the integer.

If you cast a pointer to a struct,
it becomes the struct.

The pointer can crash and can overflow.

Be a pointer my friend.

Long story short: University fucked up single sign on.

For every online service I have, I set a different password, randomly generated ~ 20 characters long. At our university we have multiple systems but they offer a single sign on service which is quite nice because it is so non-transparent which service now uses which authorization. I changed my password a while ago and around the same time they also updated our mail client. Since then I am not able to log in which is not a big deal for me because I have mail forwarding.

Yesterday however I needed another service and also got rejected with my password. I knew from a friend that the passwords are fucked up and that some services have different restrictions (only 12 chars max.), so I decided to search how to reset my password. What the fuck was wrong with these people? It takes you five different pages to get the tiniest bit of information how to reset the password. Then on one page you can login with your single sign on and change the password. On that page you can also set the single sign on password, but if you enter an invalid password (in respect of the the other services) guess what? No feedback that you just locked yourself out of half the systems. Nice job. Also the password requirements are not next to the input fields where you change the password. Noo. That would be way to easy, remember the little small one line on the wall of text three pages ago? There you go.

Ok step one done. Now it should work, shouldn't it? Ohh no not so fast. One needs to activate the seperate service. Where you ask? Perfectly fine question. On the top of page four is a fucking one line table which looks like some five year old had some fun in excel. The button which takes you to the activation page is nearly invisible because of the non existing contrast. Also it is not a button but some arrow pointer thingy. Behind set arrow you have a page listing all differnt kinds of services, the description which you find on page two btw. No padding to decipher this shit what so ever. Nearly on the bottom is your needed button. Yes finally.

Finally I want to login, no good. Try again. Still no good. Go back to the fucked up excel table look at my username and think to myself what's the difference here? The table is so small and again no margin or padding. Apparently they cut of the last character of my normal username which i have which is fucking ridiculous.

What is wrong with you people, we are a TECHNICAL UNIVERSITY, is it so hard for you to find someone decend to unify this shit?

A half answer on SO gives me a pointer to a possible solution. Using that pointer, I actually find an answer and it's quite involved. So to help others with the same question, I edit the answer to complete it with the additional steps. No edits to the answer involved, just a few additional steps.

😡 The answer author comments that they appreciate the info, but they reject my edit so their answer isn't changed!

What a douchebag.

LOL that's why I love C!

The function pointer cast for strcmp because qsort expects a compare function with two const void * pointers instead of two const char * pointers, that's just beautiful.

Not to mention the hack to abuse strcmp on a struct - which just works because the first struct member is a string and the rest just gets swapped with memcpy as opaque data.

I guess that wouldn't pass a code review at work. :-)

A typical bouba coder:
- thinks a kilobyte contains 1024 bytes
- thinks Object.assign clones an object
- codes in react.js, thinks he knows reactive programming
- “amd is better for games, intel is better for work”
- thinks that the main advantage of ssh is that you don’t need to enter your password manually
- watches porn in incognito mode
- “crapple”
- “uhm, is it immutable?”
- thinks “persistent” means saved to local storage
- thinks designer is an inferior job because “they only draw shapes”
- thinks good accessibility is when the tab key works
- “All non-mechanical keyboards are trash”
- “C is outdated and nobody uses it anymore”
- “Zuck quit uni and now he’s a billionaire, everybody should quit”
- thinks “pointer” is a shape of the cursor

I don't wanna hear anyone dismissing college education, specially from people that can't do asymptotic analysis and have no clue what a pointer is. It's not fine. What do you think people spend 4+ years studying for? For this shit? There's a reason why a diploma has a weight, it's not just decoration.

I get it that the american educational system is fucked up and you guys have to pay a shit ton of money for it, but you can't just pretend it's worth nothing.

How diminishing it is to hear people shit on a life long struggle to get where i am today. I had to study a ton to get into college, and I'm still pouring my blood and mental health into my studies, only for some random to say that a youtube tutorial is worth the same.

I am working on an open source game project, and the most common way to draw things is using a class named ManagedSurface. The class is otherwise awesome, but it has a method called getBasePtr(x, y), which gives you a pointer to the requested coordinates. Fair enough (this is C++ without STL by the way).

But WHY THE HELL CAN I REQUEST ANY POINTER THAT I WANT, EVEN IF IT'S OUTSIDE THE SURFACE? Other cointainers have sanity checks, asserts and such, and the surface KEEPS TRACK OF IT'S WIDTH AND HEIGHT.

WAS IT SO FUCKING HARD TO ADD assert(x <= w); assert(y <= h);???

I spent 3 days on valgrind trying to find a heap corruption that manifested at random points in the code.

FUUUUCK!

On the bright side, I learned how to use valgrind (which is awesomely awesome).

Me: Fuck there's a null pointer exception here... What was trying to happen here
*Read comments*
*It's written in binary... dafuq why though*
*looks up what it says*
*Reads output*
"Sorry bud, if you couldn't figure this out... then no one can"

Many people here rant about the dependency hell (rightly so). I'm doing systems programming for quite some time now and it changed my view on what I consider a dependency.
When you build an application you usually have a system you target and some libraries you use that you consider dependencies.
So the system is basically also a dependency (which is abstracted away in the best case by a framework).
What many people forget are standard libraries and runtimes. Things like strlen, memcpy and so on are not available on many smaller systems but you can provide implementations of them easily. Things like malloc are much harder to provide. On some system there is no heap where you could dynamically allocate from so you have to add some static memory to your application and mimic malloc allocating chunks from this static memory. Sometimes you have a heap but you need to acquire the rights to use it first. malloc doesn't provide an interface for this. It just takes it. So you have to acquire the rights and bring them magically to malloc without the actual application code noticing. So even using only the C standard library or the POSIX API can be a hard to satisfy dependency on some systems. Things like the C++ standard library or the Go runtime are often completely unavailable or only rudimentary.
For those of you aiming to write highly portable embedded applications please keep in mind:
- anything except the bare language features is a dependency
- require small and highly abstracted interfaces, e.g. instead of malloc require a pointer and a size to be given to you application instead of your application taking it
- document your ABI well because that's what many people are porting against (and it makes it easier to interface with other languages)

Recently covered pointers in class. I know how to use them/Have an understanding of what they do, but why would I need to use a pointer in the first place? What problem would need to be solved through the use of pointers?

My two cent: Java is fucking terrible for computer science. Why the fuck would you teach somebody such a verbose language with so many unwritten rules?

If you really want your students to learn about computer, why not C? Java has no pointer, no passed by reference, no memory management, a lots of obscure classes structure and design pattern, this shit is garbage. The student will almost never has contact with the compiler, many don't even know of existence of a compiler.

Java is so enterprise focused and just fucked up for educating purpose. And I say it as somebody who (still) uses it as main language.

If you want your students to be productive and learn about software engineering, why not Python? Things are simple in Python can can be done way easier without students becoming code monkeys (assuming they don't use for each task a whole library). I mean java takes who god damn class and an explicitly declared entry point which is btw. fucking verbose to print something into the console.

Fuck Java.

!rant

This is a major part of my workflow, and I wanted people to see it. So I went an inch-deep on quicktime screen recording and ffmpeg flags to produce this low-quality gif.

I pop open the alfred text window with cmd-space, and have it set to use DDG as my default search provider fallback. In this way, I'm able to execute bang-searches without having to load any urls, or even move the pointer.

What kinds of productivity/workflow tricks do you use?

I once interviewed for a role at Bank of America. The interview process started off well enough, the main guy asked some general questions about career history and future goals. Then it was off to the technical interviewers. The first guy was fine. Asked appropriate questions which he clearly understood the answers to.

The next guy up, however, was what I like to call an aggressive moron. After looking at my resume, he said I see you listed C++. To which I said, yes I have about 7 years of experience in it but I've mostly been using python for the past few years so I might be a bit rusty. Great he said, can you write me a function that returns an array?

After I finished he looked at my code, grinned and said that won't work. Your variable is out of scope.

(For non C programmers, returning a local variable that's not passable by value doesn't work because the local var is destroyed once the function exits. Thus I did what you're supposed to do, allocate the memory manually and then returned a pointer to it)

After a quick double take and verifying that my code did work, I asked, um can you explain why that doesn't work as I'm pretty sure it does.

The guy then attempted to explain the concept of variable scope to me. After he finished I said, yes which is why I allocated the memory manually using the new operator, which persists after the function exits.

Einstein then stared really hard at my code for maybe 10 to 15 seconds. Then finally looked up said ok fine, but now you have a memory leak so your code is still wrong.

Considering a memory leak is by definition an application level bug, I just said fine, any more questions?

!rant
Warning : This rant is long and is a rant asking for help and suggestions. If you will read and dont leave any comments, please go search other rants. Thanks.
-----------------------------------
Hi, fellow ranters. In our community, we have a tech class where teens (teens here mean 14yo -15yo) come to learn computer stuffs. Teens here are selected by a test and an interview. There are some teens who are f***ing awesome. One of them are proficient in scratch. (yeah, the orange cat) Another is awesome at PhotoShop, and the other loves windows xp. The teacher uses Microsoft Visual C++ IDE made in the 1990s. The kid sitting to my left made flappy bird with gamemaker. About 10 to 11 teens doesnt know what ctrl+alt+del does in windows and never did programming before... 3 among them always brings coke and oreos and eats super loudly. CRACK! And I bet no one knows about git.
Ok. Enough for the awesome teens. Now what we learn.
We learn C! Yes, C. We learned for, if else, switch and all those stuffs, then learned variables, which made other students who never did programming before be (―,.―).
Next class we will learn about functions in 3 hours. Then array and pointer in 3 hours. Thats it for c programming. Then we do some unnecessary stuffs and time for the finals.
We need to make a project with up to 4 teens as one team. Now I am asking you awesome ranters to suggest some projects for about 4 pros and 16 noobs can do. 10 hours are given in class and we can do in other times by ourselves in home. What should we do? I bet many of them will say to make ascii art in c which is dull and I have no thoughts of doing that.
Any thoughts will be appreciated.
Thank you for reading.
To see my skills, go to my profile page.
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Sometimes when I'm telling my boss how to do something on his computer or I am watching him explaining something to me and he seems like a fucking lost infant that never used a fucking computer in his life I just wanna say loud and firmly:

"What the fuck man? Can't you fucking just click this shit already? Your fucking mouse pointer is on it already, click this motherfucker for once!"

Pro tip: how to reply to more than one person
1) click reply
2) close the reply by pressing the x button in the upper left hand corner.
3) click reply button of another person. Their name should now be added
4) Reference a Null Pointer
5) Profit?

Ok c++ professionals out there, I need your opinion on this:
I've only written c++ as a hobby and never in a professional capacity. That other day I noticed that we have a new c++ de developer at the office of which my first impression wasn't the greatest. He started off with complaining about having to help people out a lot (which is very odd as he was brought in to support one of our other developers who isn't as well versed in c++). This triggered me slightly and I decided to look into some of the PRs this guy was reviewing (to see what kind of stuff he had to support with and if it warranted his complaints).

It turns out it was the usual beginner mistakes of overusing raw pointers/deletes and things like not using various other STL containers. I noticed a couple of other issues in the PR that I thought should be addressed early in the projects life cycle, such as perhaps introduce a PCH as a lot of system header includes we're sprinkled everywhere to which our new c++ developer replies "what is pch?". I of course reply what it is and it's use, but I still get the impression that he's never heard of this concept. He also had opinions that we should always use shared_ptr as both return and argument types for any public api method that returns or takes a pointer. This is a real-time audio app, so I countered that with "maybe it's not always a good idea as it will introduce overhead due to the number of times certain methods are called and also might introduce ABI compability issues as its a public api.". Essentially my point was "let's be pragmatic and not religiously enforce certain things".

Does this sound alarming to any of you professional c++ developers or am I just being silly here?

When it comes to the idea of programming and magic, or the comparison between software developers/engineers, computer scientists etc as magicians or wizards, nothing brings the idea much more close to hearth than the C programming language.

A while ago I read the R.A Salvatore books concerning Drizzt, the dark elf. I loved the books, have not continued reading them but I remember them vividly. There was one book in which a human magician came about wielding extremely explosive magic, humans were capable of channeling large amounts of it through explosive and unwieldly ends.

This is the same feeling I get from C

Consider:
int items[] = {1, 2, 3};
printf("Third : %i\n", 3[items]);

and fuck me if shit like the above is not dangerous, it makes sense, arrays have the first items of it server as the pointer address to a first element, doing the above operation returns the third element of the array of 3. But holy shit if I don't think this is dangerous and interesting as fuck

there are many more examples I have that I am finding through me fucking around with: language development (compiler, interpreter), kernel programming as well as net sec. C is the most powerful and devastating thing we have in our hands indeed.

Null Pointer Exception

Null Pointer Exception,
you're in a class of your own.
I will try and catch you,
each instance you're thrown.

Null objects expel you,
because you are vile.
I dread that I'll c you,
when I attempt to compile.

Like the grim reaper,
you destroy lines of code.
And so to you,
I dedicate this ode.

You have no remorse
for those who won't test.
As a result,
I need to confess.

From time to time,
when there's no time waste.
I must rely
on cut and on paste.

Although we're acquainted,
I really must mention.
You're not my friend,
Null Pointer Exception.

@apple since I can't move Xcode's instruction pointer without crashing Xcode or my app, I have to use a global with 'if' statements to have optional debugging logic.

if( ! gAppleFuckTards) {
... do optional code stuff
}

and then change the value of gAppleFuckTards with the debugger to execute the code.. but WAIT

Xcode purports to be able to change values via debugger but really cannot... can't change gAppleFuckTards to false in the debugger. But that kinda makes sense as it is an empirical truth.

Thwarted by the cosmos again!

¡rant|rant

Nice to do some refactoring of the whole data access layer of our core logistics software, let me tell an story.

The project is around 80k lines of code, with a lot of integrations with an ERP system and an sql database.

The ERP system is old, shitty api for it also, only static methods through an wrapper to an c++ library

imagine an order table.

To access an order, you would first need to open the database by calling Api.Open(...file paths) (yes, it's an fucking flat file type database)

Now the database is open, now you would open the orders table with method Api.Table(int tableId) and in return you would get an integer value, the pointer.

Now for the actual order. first you need to search for it by setting the search parameter to the column ID of the order number while checking all calls for some BS error code

Api.SetInt(int pointer, int column, int query Value)
Then call the find method.

Api.Find(int pointer)

Then to top this shitcake of an api of: if it doesn't find your shit it will use the "close enough" method of search.

And now to read a singe string 😑

First you will look in the outdated and incorrect documentation given to you from the devil himself and look for the column ID to find the length of the column.

Then you create a string variable with ALL FUCKING SPACES.

Now you call the Api.GetStr(int pointer, int column, ref string emptyString, int length)

Now you have passed your poor string to the api's demon orgy by reference.

Then some more BS error code checking.

Now you have read an string value 😀

Now keep in mind to repeat these steps for all 300+ columns in the order table.

News from the creators: SQL server? yes, sql is good so everything will be better?

Now imagine the poor developers that got tasked to convert this shitcake to use a MS SQL server, that they did.

Now I can honestly say that I found the best SQL server benchmark tool. This sucker creams out just above ~105K sql statements per second on peak and ~15K per second for 1.5 second to read an order. 1.5 second to read less than 4 fucking kilobytes!

Right at that moment I released that our software would grind to an fucking halt before even thinking about starting it. And that me & myself and I would be tasked to fix it.

4 months later and two weeks until functional beta, here I am. We created our own api with the SQL server 😀

And the outcome of all this...

Fixes bugs older than a year, Forces rewriting part of code base. Forces removal of dirty fixes. allows proper unit and integration testing and even database testing with snapshot feature.

The whole ERP system could be replaced with ~10 lines of code (provided same relational structure) on the application while adding it to our own API library.

Best part is probably the performance improvements 😀. Up to 4500 times faster and 60 times less memory usage also with only managed memory.

For a long time I was of the opinion that pointer variables in C/C++ should have the asterisk immediately after the type name (e.g. int* foo).

Eventually I became convinced that it makes more sense to have it before the variable (e.g. int *foo).

Now I find routines that return pointers look weird, e.g.: void *allocate_something() so I am considering adopting the original style I used.

The only advantage of having the asterisk before the variable name I am aware of is that it is easier to remember to add an asterisk if you define more than one pointer on that line.

Anyone else find it hard to settle on code style guidelines for their own personal projects?

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?

So just read up that some companies based in china were able to attack Google back in 2009, all cause IE had a dangling pointer issue.

*Sarcastic claps*

Question and Update.
First of all, I would like to thank @ScriptCoded for an idea in the previous post, so then I have beautiful terrain now, and the complete world map generated like plots, and each of them consists of 5x5 different plots defined by neighbors :) Hired a digital artist who is working on much nicer plots as well.

The new issue is regarding the zoom.
The map is saved as JSON with the pixel-perfect location of each generated plot so I am detecting the collision with the mouse based on their location. After I zoom in, the script is still comparing the pixel location of the element, but the real screen is scaled already so the pointer is off (image2). The problem is described in image3 as well. How can I still get the canvas relative value of the mouse instead of the x,y coordinate on the current zoomed screen?

c++ has a little bit of a learning curve, I think.

Used smart pointers everywhere in my code because I heard that's what we gotta do nowadays.

When learning about shared vs unique vs weak, I disregarded weak pointers because I didn't really understand them.

"That sounds like something for liberal pansies", I said to myself, then continued on with my STRONG shared and unique pointers.

Now my app leaks memory like a MOTHERFUCKER, if you can believe that.

So now I need to go back and manage my object lifetime with more intent instead of just making everything a shared pointer. Fuckin circular references. Fuckin reaping what I fuckin sow. God damn.

Fixed a bug today that I created over a year ago.
It made a machine start doing really fucked up things like running motors when it shouldn't. My boss, an expert on the system and the code, gave me some ideas to check. He couldn't understand why it was doing it either. So I started checking things and comparing to another piece of code that does similar things. I finally found a place where I had used a really sketchy pointer. I even knew it was sketchy at the time and put a ? mark in the comments next to the line of code. I changed the code to match another system that explicitly creates the object. Then I started testing the system and boom everything is working as it should. I talked to my boss and explained everything. He said it was an easy mistake to make. Internally I was saying, "But I don't make easy mistakes. I make hard mistakes!" LOL

Got to walk away from work for the weekend knowing that my other code is a lot more solid than I was thinking earlier this week. I was starting to second guess what could possibly cause this problem and thinking there could be culprits everywhere. Boss was happy problem was solved as he is going to be showing off the system I am working on in a month at a show.

My lead: Here's an epic to remove a framework from all our projects. I want you to write every planning step in a document before you make any tickets or do any work.

Me: Okay cool. Before I do that, I'm just gonna finish the removal from the project we're 99% done with so we can remove that from the planning stages. I already did it locally with no issues so we know it's a 1 pointer. That takes us from two dependency graphs down to one which will help immensely in planning.

Lead: No. Don't make any tickets, this is a spike. Just put it in the document so management will know how long we expect the whole thing to take. And make sure you pull in this engineer from a completely different team who has his own tickets and doesn't even know I'm doing this. Make sure you include him on everything.

I feel like saying "I know C#" (or Java or other similar languages) to mean that you know it as a language as opposed to more of a framework is ridiculous. We should say what programming language level we know (high, mid, low...) since the difference between say C# and Java is pretty much the same as the difference between say WinForms and WPF. Depending on which two languages and which two frameworks you choose it can be a much bigger difference between the frameworks than the languages.
In a CV I'd like to say "I know x-level languages with experience in [actual programming language + frameworks]" instead of saying I know C# and then recruiters and HR people and such assume I don't know Java at all, but know MVC, WebForms and whatever else even though I might specialise in something else and would take me pretty much the same to get proficient in Java as it would take me to get proficient in that framework or something that's technically C#.
It just makes so much more sense to me. As a dev you're supposed to know the principles, the syntax should be secondary. A pointer is a pointer regardless of it's marked with a * or IntPtr or just a value in a register with no special marking that it's a pointer...
Can we, as devs, come up with something like this?

I wanna make a c+friends language and it'd be dev friendly and will throw lots of errors on compile to show love. Also it'll compile slower with each newline so you can always say "it's compiling" there will be classes but people instead and then instead of new I'll have create. As for loops let's go with a friendly do while loop and dontdo while as normal while or dowith i while to have a friendly for loop. Instead of ifs let's say decide() and instead of else let's have or. Instead of functions I'll have well you need no functions you'll have jumps and tests before jumps just like assembly has. Oh and everything will be a pointer because then it runs nicer. To create a variable you can't use = because that's the equal sign in decide you need to use "var int myint is 69" because why not. Then to print to the console "console.outputstream.out(myint)" instead of threads I'll have please like "please work" where work is a jump target. I hope you'll enjoy this language ^^

android development is shitty af, it will make you super zombie computer nerd that sit on his chair for fking several hours just to find the where the fk is null pointer exception is coming from not only this but for all kind of errors,logcat looks like someone just hacking nasa, you know what im the one who is shitty af i would have opt web dev instead of android dev , this retarded studio and emulator takes too much time to just load a simple fking thing & if i make some change in it i've to install that application again ,it's so pathetic and horse shit thing i've ever encountered , kotlin is fun it's actually great language most of the features are so helpful in it,but the google codelabs,it's all documentation , adding dependencies whole concepts are trash imo, why can't we install the dependencies using terminal what's problem in that ,but no they chose the hard way for no fuking reason, i've successfully wasted a year learning this shitty tech stack, hopefully this NY i will choose different stack , will work till ass off .gonna build some cool projects and will eventually try for internships and all. done with android dev, idk how senior dev's are alive in this field

I wish I were a super hero who's special powers were development related. Like being able to change a person's pointer to point to null or being able to cast a Queue as a Stack so I can go first.

Because of my personal life my career life is failing.My Girlfriend getting married to a "null pointer" by next month and I can't concentrate on any of my stuff. I have started a startup recently I am scared of losing it.

Somehow I wrote some code that ended up comparing a string type object against a pointer of an unrelated class. There are NO functions to convert that class to any kind of string representation. Let alone ones that would allow that to happen in C++.

WhyTF did the compiler not pick up on this?

C/C++ is so fucking unreadable. Who had the cancer idea to use abbreviations for EVERYTHING?? If a word is longer than 3 chars you can be sure those psychologically unstable devs will use a shortcut.
Pointer ==> ptr
test_and_set ==> fucking t_a_s
rollback ==> rb
I don't want to play a shitty word guessing game for every fucking function in your horribly documented api.

Don't you guys think we need live programming?

Like a development runtime, instead of doing this whole file based development thing? We edit files, and then run them, why aren't we just running a program constantly and editing it as it runs? It would let us inherently take advantage of concepts like objects and lists instead of having to build plugins that analyse and modify our files to sort of act like complex programming data structures.

If we just programmed using these complex data structures to begin with.

Like do you realise how antiquated the idea of a file is, and folder, that's literally a paper based analogy.

Imagine if we just had objects, with pointers and property names, the best we have is ln -s file1 file2 but that's not a real pointer.

Anyway, hope someone understands me!

I'm writing a medium article called a world beyond files but I'm stuck at how low level to go and who the audience of the article should be.

I went really in depth into what this idea of an "object" is, and how it can be expressed in a file but once a program picks it up it becomes much more and almost alive.

Oh god, structure alignement, why you do this... You might be interested if you do C/C++ but haven't tried passing structures as binary to other programs.

Just started working recently with a lib that's only a DLL and a header file that doesn't compile. So using python I was able to use the DLL and redefined all of the structures using ctypes, and the nice thing is: it works.

But I spent the whole afternoon debugging why the data in my structures was incoherent. After much cussing, I figured out that the DLL was compiled with 2 bytes packing...

Packing refers to how structures don't just have all the data placed next to each other in a buffer. Instead, the standard way a compiler will allocate memory for a structure is to ensure that for each field of the structure, the offset between the pointer to the structure and the one to the field in that structure is a multiple of either the size of the field, or the size of the processor's words. That means that typically, you'll find that in a structure containing a char and a long, allocated at pointer p, the double will be starting at p+4 instead of the p+1 you might assume.
With most compilers, on most architectures, you still have the option to force an other alignment for your structures. Well that was the case here, with a single pragma hidden in a sea of ifdefs... Man that took some time to debug...

Xcode: took away the ability to manage multiple windows as documents; everything is a half-assed safari browser window that neither works like Mail nor like Safari.

Xcode: took away the ability to have variables in the debugger in separate displays, now it is a single basket of eye-bleeding variable/data spew.

Xcode: took away the ability to modify variable values in the debugger, it's just broken and lets you think you can but reverts the value.

Xcode: took away the debugger's ability to modify the execution pointer. You can't move the current line of execution to the previous line, the line past the current line, nothing.

The same internal human virus that manages the Alzheimers 'upgrades' of macOS Server seems to be managing the Xcode debugger, more aptly named now "Xcode stepper" cuz it makes a lot of motion but goes nowhere fast.

Looking for the correct download button is like defusing a bomb.

Click the wrong one and *BOOM*

Hello Ads!

(For those who're still struggling with this. Hover your pointer on the download button and check if the url it leads to is legit.)

how to identify the authentic recurssion post:
check out the tags: recurssion xy
check the number of comments it should be 2^x
those who break it go get urself fucked by a dereferenced pointer

Next time someone asks me to go get something that's heavy, I'll smile, go there and return with a pointer to that thing. After all, we have to practice these programming concepts in everyday life 🚶‍♂️🚶‍♂️

Today i faced a "bug" which caused an element not to trigger a Bootstrap 3 accordion by klicking on it. Only on iOS/iPhone - Desktop and Android worked fine.
The actual problem was that almost the same structure worked fine on another website...
took me about 3 hours to figure out that the element which was supposed to trigger the accordion needs the css property 'cursor: pointer;'.
why the hell does a touch device, which got no coursor, need this property?!

So at one point I worked on an inherited project that had the worst code I've ever seen. I mean bad, so bad there may no quantifiable measure that can accurately convey how bad. We ended up naming the thing 'the hydra', cause it had a million issues and they just kept growing as we fixed things. To my point, in C++ they implemented their own primitive type Boolean32 as a signed int32 pointer. If that wasn't enough they used it as an octal bit mask. They also switch the value using logical and / or between 2 numbers, 037777777777 and 000000000001. So essentially they only switch this value to 1 or -1 and end up comparing it to their own const true or false. In c++ any value not 0 is == true...apparently not in this code.

NULL and '/0' are two different things. NULL is a null pointer. '/0' is a null byte. C handles those two differently enough to introduce some interesting issues. Helped a friend debug his code, execvp() was freaking out because he had tried to terminate his argv array with a null byte instead of a null pointer. As far as the system was concerned, that doesn't mean anything more than "oh look there's no string here." Big big difference.

My best teacher was with me for C++ in high school and in college. He had the most relaxed, laid back style while managing to both make the lessons fun.

Perhaps my favorite lesson was around C++ and Pointers. Lessons generally we mixed with long ramblings about the military and live coding examples. He was talking about object references and Navy ships when he told a student to "give me the USS Wisconsin". Perplexed, my classmate said he wasn't sure he could do that without a lot of help. So this teacher drew an arrow on a piece of paper, showed it to the class and then found the general direction he wanted it to aim for and taped it to a pole next to the stage. He called that a Pointer to a USS Wisconsin and then asked the student to give him the USS Wisconsin again.

I understand pointers today because of that lesson.

Sometimes my hatred for code is so.. overwhelming that I think I need a sabbatical or should even stop altogether.

Let's face it. All code sucks. Just on different levels.
Want to go all bare metal? Love low level bit fiddling. Well, have fun searching for concurrency, memory corruption bugs. Still feel confident? Get ulcers from large C/C++ code base already in production, where something in the shared memory, function pointer magic is not totally right?
So you strive for more clean abstractions, fancy the high level stuff? Well, can you make sense of gcc's template error messages, are you ready for the monad, leaving behind the mundane everyday programmers, who still wonders about the scope of x and xs?

Wherever you go. Isn't it a stinking shit pile of entropy, arbitrary human made conventions? You're just getting more familiar with them, so you don't question them, they become your second skin, you become proficient - congrats you're a member of the 1337.

I have, once again, figured out why I keep dropping C as a language. The answer is because the errors are incredibly unhelpful and actively want to implode your brain.

Examples currently being spat out by gcc for my driver:

`error: conflicting types for ‘block_read’; have ‘ssize_t(struct file *, char *, size_t, loff_t *)’ {aka ‘int(struct file *, char *, unsigned int, long long int *)’}`
`note: previous declaration of ‘block_read’ with type ‘ssize_t(struct file *, char *, size_t, loff_t *)’ {aka ‘int(struct file *, char *, unsigned int, long long int *)’}`

`error: initialization of ‘ssize_t (*)(struct file *, char *, size_t, loff_t *)’ {aka ‘int (*)(struct file *, char *, unsigned int, long long int *)’} from incompatible pointer type ‘ssize_t (*)(struct file *, char *, size_t, loff_t *)’ {aka ‘int (*)(struct file *, char *, unsigned int, long long int *)’}`

Go character by character for those types as listed, and tell me where they differ, because I can't find it.

personal projects, of course, but let's count the only one that could actually be considered finished and released.

which was a local social network site. i was making and running it for about three years as a replacement for a site that its original admin took down without warning because he got fed up with the community. i loved the community and missed it, so that was my motivation to learn web stack (html, css, php, mysql, js).

first version was done and up in a week, single flat php file, no oop, just ifs. was about 5k lines long and was missing 90% of features, but i got it out and by word of mouth/mail is started gathering the community back.

right as i put it up, i learned about include directive, so i started re-coding it from scratch, and "this time properly", separated into one file per page.

that took about a month, got to about 10k lines of code, with about 30% of planned functionality.

i put it up, and then i learned that php can do objects, so i started another rewrite from scratch. two or three months later, about 15k lines of code, and 60% of the intended functionality.

i put it up, and learned about ajax (which was a pretty new thing since this was 2006), so i started another rewrite, this time not completely from scratch i think.

three months later, final length about 30k lines of code, and 120% of originally intended functionality (since i got some new features ideas along the way).

put it up, was very happy with it, and since i gathered quite a lot of user-generated data already through all of that time, i started seeing patterns, and started to think about some crazy stuff like auto-tagging posts based on their content (tags like positive, negative, angry, sad, family issues, health issues, etc), rewarding users based on auto-detection whether their comments stirred more (and good) discussion, or stifled it, tracking user's mental health and life situation (scale of great to horrible, something like that) based on the analysis of the texts of their posts...

... never got around to that though, missed two months hosting payments and in that time the admin of the original site put it back up, so i just told people to move back there.

awesome experience, though. worth every second.

to this day probably the project i'm most proud of (which is sad, i suppose) - the final version had its own builtin forum section with proper topics, reply threads, wysiwyg post editor, personal diaries where people could set per-post visibility (everyone, only logged in users, only my friends), mental health questionnaires that tracked user's results in time and showed them in a cool flash charts, questionnaire editor where users could make their own tests/quizzes, article section, like/dislike voting on everything, page-global ajax chat of all users that would stay open in bottom right corner, hangouts-style, private messages, even a "pointer" system where sending special commands to the chat aimed at a specific user would cause page elements to highlight on their client, meaning if someone asked "how do i do this thing on the page?", i could send that command and the button to the subpage would get highlighted, after they clicked it and the subpage loaded, the next step in the process would get highlighted, with a custom explanation text, etc...

dammit, now i got seriously nostalgic. it was an awesome piece of work, if i may say so. and i wasn't the only one thinking that, since showing the page off landed me my first two or three programming jobs, right out of highschool. 10 minutes of smalltalk, then they asked about my knowledge, i whipped up that site and gave a short walkthrough talking a bit about how the most interesting pieces were implemented, done, hired XD

those were good times, when I still felt like the programmer whiz kid =D

as i said, worth every second, every drop of sweat, every torn hair, several times over, even though "actual net financial profit" was around minus two hundred euro paid for those two or three years of hosting.

One of the guys were tasked to implement a button with a functionality.
When I clicked the button, I got an error. Asked the guy why, and he said that fixing the functionality was not part of the task. What? So basically he just put a nice little button that does nothing? And our team lead just approved his merge request?!
I can't comprehend this logic at all.

Another story, I overheard a different guy debugging a pointer array (C++) with a senior. I couldn't keep my face straight when he seems to struggle to dereference a pointer and iterating through an array. He can't do that and he calls himself a mid-level engineer?!

The more I stay in this company, the more I realize that many people in my teams are clowns.

Some compilers give an error message on forgotten type casting. From that it shows good typing style casting. So you also avoid clerical errors that can lead to the program crash in the worst case. With some types it is also necessary to perform type casting comma on others Types, however, do this automatically for the compiler.
In short:Type casting is used to prevent mistakes.
An example of such an error would be:
#include <stdio.h>
#include <stdlib.h>
int main ()
{
int * ptr = malloc (10*sizeof (int))+1;
free(ptr-1);
return 0;
}

By default, one tries to access the second element of the requested memory. However, this is not possible, since pointer calculation (+,-) does not work for a void pointer.
The improved example would be:
int * ptr = ((int *) malloc (10*sizeof (int)))+1;

Here, typecasting is done beforehand and this turns the void pointer into its int pointer and pointer calculation can be applied. Note: If instead of error "no output" is displayed on the sololearn C compiler try another compiler.

What in the holy hell is a pointer to function and function pointer.I guess they have a purpose, I hate their existence. It's solely because it is complicated

Hmm,
The first one was eons ago. I was coding in Pascal and discovered System interruptions. The “Ahaha” was when I realized it’s easy to store CPU state and invoke whatever the fuck I want on any memory pointer. I loved my 2 silly animations running side by side on 80286.
Most recent : Finally understanding how “Expression” works in C# and how it can be combined into a Lambda and compiler does the whole heavy lifting on types compatibility and more.

Cleaning up code warnings in a 3rd party piece of software and found a function that was returning a pointer to a local variable, who wrote this piece of shit?!

Recoding the malloc is a mess. It seems to be a very good exercise and it is. But you know there are so much mystical issues that happens when you're working with memory.

I just figured out that I got 90% of my free function calls by the "ls" command that was in reality a bad pointer following my own verifications.

So, I don't know why because I just make a normal vérification so except if the "ls" was developer with the ass...

My brother proudly told me how he scanned 150 pictures and made a mouse-pointer macro to photoshop light and crop the pictures.

Didn't have it in my hear to tell him I have digital copies of all those images.

Just moved my computer up to my new office... just to find that I'm suddenly having a driver issue (I think) that wasn't there before.
Basically my audio and mouse pointer hang for 1/10 of a second every few seconds.
The bad news is, it seems to disappear when I disable my wifi card, which I kinda need for my internet.. and I already have the latest drivers.

Why do people put the asterisk in pointer types right before the name, thus having it separated from the type? This doesn't really make sense to me, since in this case it isn't a runtime operator but a part of the type definition.

Note: I have deleted my previous version of this question as I found it lacking crucial information and therefore being prone to misunderstandings.

Question : In C/C++ you can position the keyword 'const' either left or right of the left-most type specifier. Which variant do you prefer?

I ask that because I'd like to hear your opinion. Although I have been working with C over three decades now, I only learned this a couple of years ago. After some experimentation I decided for myself, that I like the placement to the right more. Although the positioning to the left is taught in literally every book and course, the original placement suits me better.

One reason, of many, is the listing of many member variables in structs or classes. To have them nicely aligned, I always had to put 'const' either on the previous line or put in extra indention to everything non-const. That was quite irritating sometimes.

Another, and my main reason is, that when reading from right to left, the rhs variant just makes more sense than the lhs variant. Reading from left to right almost never makes much sense without straining your eyes. But that is, of course, highly subjective.

This is even more so if you have pointers. The 'const' keyword modifies the type identifier(s) to the left. So if the 'const' is (anywhere) left of the '*', the data is const. If the 'const' is right of the '*', the pointer address itself is const. The same applies to references.

Examples, read right-to-left:
int* const i; // i is a const pointer to int data
int const* i; // i is a pointer to const int data
int const* const obj; // i is a const pointer to const int data

The "classical" or "taught" way, that is found almost everywhere would read, still right-to-left:
int* const i; // i is a const pointer to int data
const int* i; // i is a pointer to int data const
const int* const obj; // i is a const pointer to int data const

Not only that the second "lhs" form reads worse, it also looks worse. In my opinion, the first "rhs" variant makes it simpler to quickly determine that we are dealing with three ints, while on the second "lhs" variant, one has to first get past the 'const' keywords.

I know that this is not only a matter of taste, but of course of agreement, too. You can not just go and switch the 'const' placement in long standing projects. That would surely piss of a lot of people. Or even cost you your job.
But I like to know what you people think and why.

Thanks a lot in advance!

So I have an array of length 20 which stores a 64 bit decimal number by digits. The starting address is let's say array64. When I am trying to build up my number in ECX:EBX, I am using EDX as the iterator to access the individual elements of the array (I am loading them into AL)

.LOOP:
....
MOV AL, [array64+EDX]
INC EDX
....
JMP .LOOP

The problem is: somehow EDX cannot get higher than 10, so the program just stops and waits for input, when I try to work with a 12 digit number...
This module is outside the main function, and I thought about some Far Pointer problems, but all of my ideas just failed...

What is wrong here?

More linux driver woes:

Driver is passed a file position and byte count when asked to read from a device. Sounds easy, right? FUCK no.

For reads, driver is passed struct `filp` with field `f_pos`, a direct pointer to the same struct field, int `count` as a number of bytes to read, and `buf` to return those bytes with. Problem is, requesting, say, 256 bytes from location 10000000h will give the driver `filp->f_pos = 0`, `f_pos = 256`, and `count = 0`. I don't know how to fix this and there's NO help for this shit. None whatsoever.

This shit, right here, is why Linux drivers suck ass.

I manage to create a circle of pointer in C during the implementation of a custom version of huffman. Spent hours trying to understand why my stack was exploding (recursive fctn) .

Why the flying fuck does a resultset get returned with the pointer going to BEFORE the first fucking entry? And why does the error say "no data available"????
I saw the stinking values in the debugger, you fat cunt, don't tell me there is nothing there.
But hey, at least now my boss doesn't have any expectations whatsoever. I sure am dense motherfucker.

Thank you, .NET Framework, for keeping your GC from destroying my DynamicMethod instance after I've accessed its function pointer!
Unlike another runtime that caused me to waste my weekend hunting a memory corruption bug in a managed language because of a minimal behavioral difference...
/tableflip

Why the fuck is it not possible to pass a pointer to a multidimensional array in C++? Like who the fuck though a pointer to a pointer to an array was an elegant solution? I still can’t get my head around how to access the fucking array!!! And this is for a project too that solves poisons equation using the finite difference method none of which was EVER explained!!! Does anyone have a clue about this??????

VESA is driving me crazy.

I'm trying to set my video mode via VESA functions which works, the QEMU window size changes, ton of more space.

Problem now however is that I have no idea where in the name of god the goddamn framebuffer starts.

Apparently it's address is located withing the mode info block which I have successfully queried and stored in ES:DI.

Problem now is getting this info block into my 32-bit kernel.

I tried smacking it on the stack which only produces hot garbage.

Essentially it goes like this

[...make sure pointer to block is stored within ES:DI...]

mov ebx, [ES:DI]

[Switch to 32 bit mode, ebx is not erased by doing so]

;Set up stack
mov ebp, 0x90000
mov esp, ebp

call kernel_main
jmp $

kernel_main takes this pointer as an argument, hence why I've pushed it onto stack:
main(uint32_t *ptr);

When I try accessing it however by doing the following:
vbe_mode_info_block* info_block = (vbe_mode_info_block)ptr;

And then try accessing the in the member 'framebuffer' using 'info_block->framebuffer' it's giving me hot garbage.

I'm probably doing something obvious wrong.
Frustrating.
I'm gonna try passing ES and DI seperately and converting them to a real mode address by doing addr = (ES*0x10)+DI;

MAYBE MAYBE MAYBE

I need to tell you the story of my MOAB (Mother of all bugs).
I need to write some stuff in C (which i am fairly used to) and have a function that allocates memory for a Matrix on the heap. The matrix has a rows and columns property and an associated data array, so it looks like this
struct Matrix{
uint8_t rows;
uint8_t columns;
uint8_t data[];
}
I allocate rows*columns + 2 bytes of memory for it.
I also have a function to zero it out which does something like this
for(int i=0; i < rows*columns;i++){
data[i]=0;}

Let‘s come to the problem:
On my Mac the whole stuff works and passes all tests. We tried the code on a Linux machine and suddenly the code crashed in various places, sometimes a realloc got an invalid pointer, sometimes free got an invalid pointer and basically the code crashed at arbitrary points randomly.
I was confused af because did i really make THAT many errors?

I found out that all errors occured when testing my matrices so i looked more into it and observed it through the debugger.

Eventually i came to the function that zeroes out my matrix and it went unusually high and wondered if my matrix really was that big.
Then i saw it
The matrix wasn‘t initialised yet
It had arbitrary data that was previously in the heap.
It zeroed out a huge chunk of the heap space.
It literally wrote a zero to a shitload of addresses which invalidated many pointer.

You can imagine my facepalm

rant == needHelp(c++/Qt)

Ok, so I want to pass a pointer to my main class like

CSprite2D::CSprite2D(int number, Ui::MainWindow *i = 0) //gets the number of total sprites from MainWindow
{
number_sprite = number;
ui = i;

QTreeWidgetItem *item = new QTreeWidgetItem;
item->setText(0, "Node 2D " + number_sprite);
ui->treeWidget_2->items.append(item);
}

But I get an error (blablabla doesn't have a class type)

I know, some people hate it, when others use devRant as StackoverFlow, but I can't get any good results off SO, as I always get downvoted for some minor stuff

One of the truth no one wants to say because what can not be can not be.... but...
Maven is fuck... bullshit... failure by design.
For each project I need an own settings.xml. Always something not working. The same artifactory password 10 times there. Null pointer exceptions all over the place. Basics like versioning not really solved.
In all my years with Ant I never had so much problems than with Maven.
This settings.xml is really a design failure. Crap.

I'm all spooked out. I just added complicated JS code in a massive block, doing something complicated, using syntax that I wasn't sure about.

Load the page, smugly expecting like 200 errors. None.

Alright...

Run everything... it works.

WTF.

It's all balanced out though, because then python started freaking out with the wackiest motherfucker of an error I've ever seen. (A pointer to a function magically turning into None)

Why do you lil' shits keep making LAYERS and LAYERS of unnecessary abstraction and then call it goddamn progress???
Dude what the fuck is this UEFI shit?!
Why the hell do I NEED to import a frigging library and read tons of boring and overly complicated documentation just so I can paint a pixel on the screen now uh??
Alright alright yeah so the BIOS is a little basic but daaaamit son if you want something a bit more complicated you make it yourself or install an OS that provides it! Like we've been doing it for years!!!
Dude, you don't get to know what a file system is until I tell you!
The PC be like:
"You wanna dereference the 0x0 pointer? There you go: it's 0xE9DF41, anything else?
You wanna write to the screen? Ok I have a perfectly convinient interrupt setup for that.
Wanna paint a pixel yellow? Ok, just call this other interruption. Theere we go.
And it only took four bytes and a nanosecond to do it."

That shit works, and if you want something more complex, but not too much, that still runs efficiently install DOS.
Don't mess around with the hardware pleeease.
We can still understand what's going on down there. Once UEFI steps in, it'll be like sealing a door forever. Long live BIOS damn it all!

Learn enough math to solve the problem Chat GPT (and two university math professors) have been unable to solve :(

The hardware is ready, the software is ready, and the only missing piece is to align a laser pointer with a Lambert's conformal conic projected map... I thought Chat GPT would be able to at least provide me with the necessary formulæ, but not...

Facing some down - simultaneously somehow as dev and privately.

The dev part partly triggered by another burning project. Our team deep in shit up to the chin... And this unanswerable question: who is to blame? Everyone is working up their arses, but the result is still some sparkling firework ship wreck, that only held together for the demo to the board. It's not that we are stupid or lazy, yet we push some unmaintainable spaghetti, because this shit just gotta work.

Dunno, somehow this object orientation / pattern ideologies were also kind of depressing to me: partly because they smell like attempt to enlighten the inept by stupid receipts - and of course then deep down there's this nagging question if I'm not one of this inept not knowing the newest fashion template from the catalogue..

Then this Clean Code - Craftsmanship shit is bugging me similarly. Liked Robert C. Martin's book, but now I picked up some "Clean C++" and.. I kinda feel dumbed down if they try to sell the KISS principle to a 36 year-old physicist/engineer. Good for them that all our legacy shit und own fuck ups nourish this whole industry of well-meaning advisers. Argh, just fuck it, you priests, sell your obvious calendar mottos elsewhere, they are are just as useful as telling a griever that "rain follows sunshine". - As if they would not some time use the raw pointer that their coworker gave 'em, to ship shit tomorrow?

I am thinking of how I can make data upload reliable. I am sure that I am making it more complex as it could be and I need some pointer.

My goal is to have a pause/resume feature in file uploading.

Here is how it would work.

In order to start uploading , you give the server

1) File Name
2) Folder path you want to upload it to
3) Checksum of the file

Here the server will check whether you can upload it to a folder, whether the file have been previously uploaded (by file name and checksum)

If you could actually upload to the folder , server will return "unique file token" , "folder path" , "unique byte token". Let call it init_upload().

The client will use "unique file token" (to identify the file) , folder path (to know where to upload it to) , "unique byte token" and byte[] (data which to actually upload). Let call this operation data_upload().

If the operation is actually complete , server will return new "unique byte token"

Internally it will actually work like this.Let say we want to upload "file.mp3", when the client call init_upload() it will create

file.mp3 and unique_byte_token.file.mp3.

When the client upload data first time , it will append data to unique_byte_token.file.mp3.

When the client upload data second time , it will check whether the "byte token" that client put is the same as previous "unique_byte_token". If it is same ,
1) we move the data from unique_byte_token.file.mp3 to file.mp3
2) Delete unique_byte_token.file.mp3
3) Create new unique_byte_token.file.mp3
4) Append data to unique_byte_token.file.mp3

The reason I am using "byte token" is because I want to check whether previous upload is actually success.

Let say we need to call 50 part of data_upload() will put 49 part to file.mp3 and 1 part to byte_token.file.mp3.

Finally the client need to call data_upload_complete() which will

1) Put reminding 1 part to file.mp3
2) Remove byte_token.file.mp3 as cleanup

I've recently had an exam, a C++ exam that was about sorting, pointers, etc... The usual. The exam was about Huffman's
optimization algorithm along with some pointer problems. He asked for a function to find something in a stack, what I did was write down a class that has a constructor, deconstructor, SetSize(), Add(), Remove(), Lenght(), etc.. He didn't give me any points for that, why? Because I didn't write down everything like in his book... I had classmates that literally had phones open with his book, he just watched how they copied code and gave them 10/10 points. But nothing to the guy that wrote down 20 pages of code. YES!! On paper, an IT university that asks you to program on a fucking paper. Good thing that at the very least I passed.

TL;DR
Teacher has book, I refuse to remember code from it/copy from it, I get lower grades than people that literally copied word for word.

Life is really fair.

I want to emulate a dial input because skeuomorphism is cool. I thought it would be nice to freeze the mouse pointer while a dial is clicked so it doesn't wander off to the void while the user watches the dial value. Do you think this is a good idea? Also, is there any gui toolkit that allows this?

you know. a little pointer as to what it is I'm supposed to be doing to move on with life would be nice.

government work. happens. then it ends and this time period goes belly up.

private work. happens. then it ends and this goes belly up.

why are people so keen on making everything go in a circle and what am I supposed to do be unemployed ?

I don't know what's happening. In passing a char pointer to a function. I'm having issue, so I'm printf'ing the address pointed to by the pointer. Right after I assign it, it contains the right address, but the printf on the next line has it containing a different address. Another printf shows another different value, but all the following printfs show that third value. They're all consecutive printfs with nothing happening in between in the program, and the char* starts it's life as an array. All compiler optimizations are disabled. I don't know what's happening, it's just randomly changing. 😭

Anyone experiencing a sudden lag of their logitech unifying ?
When mouse pointer lag it get me on the nerves, and can"t find any solution yet.
Plz help, i switched for a wired mouse for now.

I saw that it may be to do with usb power management. Drivers ?
Any ideas ?

Just realized a member function pointer can be a template parameter as non-type, gonna try to use it do no dynamic memory allocation trick with std::function.

ioctl with FIONREAD as request

it returns size of bytes ready to read, but to store that size it requires pointer to int passed in va_args

when i want to malloc a memory using that size i need variable of type size_t which is 8 bytes on 64-bit system

why do this types mismatch? if ioctl returns size with FIONREAD request it should accept pointer to size_t variable in va_args

Sophomore year starting soon so I'm looking for new project (s) to complete in parallel with the studies.
Some are more design-y and some more backend-y but I recently started getting better at designing so :)

1) Learn some fragment shader stuff. I've always been messing around with graphics and have a game on steam, so I think that's a good idea to be paired with signal processing.

2) Reactive web services. Preferably with spring-boot or vert.x but

3) I would also like to dive into golang (and make some reactive thing with it)

4) WebAssembly seems nice... But I got some concerns

5) exercise making wireframes -> CSS (with some js)

6) I've never really done any real backed work with nodejs, except serving and aot compiling js, or doing gulp tasks

7) Implementing a whole project, or a fraction of it as serverless on aws

* I'm definitely going to use a couple very simple services to make a docker swarm with load balancing, etc, just because I know how everything works but got no practical knowledge

8) Design an esports jersey for the university department I'm in (shouldn't take long)

So what do you guys think? Recommendations are welcome :)

P.S. last year in review:
> A webapp running on a raspberry pi powering a reflex testing game on gpio (java/spring-boot , codename: buttonmasher)
> small Elastic search cluster to monitor some random university servers through kibana dashboards
> laser tracking on wall of *any* colour and variable light conditions via a webcam (opencv) , controlling the mouse pointer, whether you run it against a projector or any wall
> jstrain.herokuapp.com => a small JavaScript powered tool with a DSL to help you train more efficiently without a coach
> Various random Photoshop stuff