klutt‭

Linux questions in general are not really topic here. But Bash is. After all, Bash IS a scripting language as much as Javascript. I have a hard time thinking of a question about Bash that is not o...

posted 2y ago by klutt‭  ·  edited 2y ago by klutt‭

This is intended to be a canonical post for this problem which is pretty common. Especially among beginners. I've heard that I should avoid using floating point variables for representing curren...

2 answers  ·  posted 1y ago by klutt‭  ·  last activity 1y ago by klutt‭

Sometimes when I ask questions here, I get told that I should include a minimal, reproducible example. What is that?

1 answer  ·  posted 1y ago by klutt‭  ·  last activity 1y ago by klutt‭

TL;DR A MRE (minimal reproducible example) is simply the minimal code and information needed for someone who is reading your question to reproduce the problem you are having. It needs to be enoug...

posted 1y ago by klutt‭  ·  edited 1y ago by klutt‭

Increase exposure One way of increasing our exposure is to use Codidact as a source when answering on other forums. As long as we are treating Codidact as any other source, there is absolutely not...

posted 1y ago by klutt‭  ·  edited 1y ago by klutt‭

I have seen this construct quite a lot: int *p = (int*) malloc(n * sizeof(int)); Is this how it should be? What is the proper way to use malloc? I have also seen this: int *p = malloc(n * size...

3 answers  ·  posted 1y ago by klutt‭  ·  last activity 2mo ago by alx‭

I have heard that it is undefined behaviour to make a pointer point outside boundaries of an array even without dereferencing it. Can that really be true? Consider this code: int main(void) { ...

2 answers  ·  posted 3y ago by klutt‭  ·  last activity 3y ago by hkotsubo‭

Consider this code: #include <stdio.h> int main(void) { static void *ptr; if(ptr == NULL) puts("It's NULL!"); } I wonder if this is guaranteed to print "It's NULL!" I know ...

1 answer  ·  posted 1y ago by klutt‭  ·  last activity 1y ago by Lundin‭

Background This is kind of a subquestion to How to properly use malloc? When allocating, there are basically two common ways of using the sizeof operator: int *p; p = malloc(n * sizeof *p); /...

1 answer  ·  posted 1y ago by klutt‭  ·  edited 1y ago by hkotsubo‭

While writing the question I actually came up with something that seems to work fairly well, and it's very simple. Just add if(false) in front of the statement.

posted 1y ago by klutt‭  ·  edited 1y ago by anatolyg‭

@BruceAlderman gave a good answer with different aspects that covers the most. I'm not very good at SQL, so my answer is more general. When I have to choose between two different things that are e...

posted 2y ago by klutt‭  ·  edited 2y ago by klutt‭

I have an Angular application. The frontend has a mechanism that periodically fetches some information like this: ngOnInit(): void { setInterval( () => { this.http.get(... ).sub...

1 answer  ·  posted 1y ago by klutt‭  ·  last activity 1y ago by meriton‭

I'm writing a function that counts the number of assignments for a fscanf format string. I studied the documentation in C standard 7.21.6.2 It looks like it works. It passes all test cases I have w...

3 answers  ·  posted 2y ago by klutt‭  ·  last activity 2y ago by klutt‭

TL;DR You should use int *p = malloc(n * sizeof *p); for two reasons The cast (int*) is not necessary, which means it's clutter. Using sizeof *p instead of sizeof(int) removes code duplica...

posted 1y ago by klutt‭  ·  edited 1y ago by klutt‭

I have a code block like this: try { ... x.foo(); // This is the line that forces us to have the try block ... } catch (ArrayIndexOutOfBoundsException e) { logger.error(e.getM...

1 answer  ·  posted 1y ago by klutt‭  ·  last activity 1y ago by anatolyg‭