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Let's say I have a script that needs the user to set X number of variables at the start. One can either Pass the arguments in on the command line. Start the program and then have the user input...
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...
When I first learned about salting, I thought the same thing. But as I understand it, because each salt is unique (or substantially unique within a given database table), storing the salt & has...
Lets say I have two tables, A and B and I need to join a subset of them. Is there best practices of sticking the conditions in the WHERE clause like this, SELECT * FROM A JOIN B on a.fk_b = b....
What exactly does the static keyword do in C? I have seen it used in several diverse contexts: 1) As a variable outside a function: #include <stdio.h> static int x = 5; int main (void) ...
I spend a lot of time writing CLI tools in Python, and I would like to support tab-completion in a style similar to Git. For example, subcommands should be tab-completable, options should expand ba...
Sometimes when I ask questions here, I get told that I should include a minimal, reproducible example. What is that?
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...
C does have references, but it does not have pass by reference. A reference is simply an expression that references an object (object here is meant in the general sense, not in the OO sense; for e...
I recently told a friend that malloc(n) allocates and returns a pointer to a block of at least N bytes of memory, as opposed to exactly N; that it is allowed to allocate 'extra' memory to meet e.g....
Storage class specifiers static is strictly speaking a storage class specifier, which is an attribute given to a variable or a function stating how it is allocated, how it is accessible and how lo...
Generally speaking, pointer arithmetic is undefined behavior unless carried out on arrays. This is how the additive operators behave, C17 6.5.6: For the purposes of these operators, a pointer to...
When writing any form of custom function such as this: void func (int* a, int* b) Should I add code to check if a and b are null pointers or not? if(a == NULL) /* error handling */ When po...
Bear in mind that unlike on some other question and answer sites, the "Works for me" reaction is not restricted to the author of the question. Anyone can add that reaction, whether they posted the ...
The C language has gone through many iterations and the latest one not yet released is informally called "C23", supposedly because they hoped to release it in 2023. The latest draft version N3096 i...
Consider the following method as an example: List<int> Foo() { // ... } Are there any disadvantages of returning an interface instead of a concrete implementation in C#? IList<i...
The traditional approach is to create either a single dotfile, or a single dot-directory, directly under the user's home directory, named for your application. Thus ~/.thromblemeisteradmin (which c...
Codidact has already managed somewhat to separate domain knowledge from moderator suitability. So far so good, but reputation is also a measurement of activity. It might make sense that being acti...
Here I used asterisk after Node. Actually, why asterisk used for? What if I don't put any asterisk after Node (Both Node are structure). It's a pointer. A pointer, like its name implies, poin...
Several months ago we asked for temporary moderators for this community and two people stepped up. One of them later had to step back, leaving Alexei as a sole moderator. Alexei is doing a great ...
I'm using an object-oriented design for my C project and trying to implement classes with private encapsulation. How do I do this? Some things I've tried that are problematic: Using a struct f...
Whenever registering to diverse sites on the net, you are often forced to enter a so called "strong password", which would ideally contain both upper case letters, lower case letters, digits, and s...
I have a large and complex PostgreSQL SELECT query that I would like to make faster. EXPLAIN suggests it should run quickly, with the worst parts being scans of a few thousand rows. When run, it do...
How do I clone the repository with only part of the history? For example, let's say I want to download only the last 5 commits out of thousands.
Tldr; I don't need to parse HTML, but I need to check if user submitted input conforms to a very strict subset of HTML. Can regex be a suitable tool for this? Details I have a frontend sanitiser th...
