agavrel / 42_cheatsheet Goto Github PK

My personal favorites abusing static variables

Writing colorful usage

int	usage(void)
{
	static char usage_str[] =

	GREEN"philo_one\n"RESET
	"Simulation of the philosopher.\n\n"
	YELLOW"USAGE:\n    "RESET
	GREEN"philo_one "RESET
	"number_of_philosopher time_to_die time_to_eat "
	"time_to_sleep [number_of_time_each_philosophers_must_eat]\n\n"
	YELLOW"ARGS:\n    "RESET
	"All args must be positive integer\n";
	ft_putstr_fd(usage_str, 1);
	return (1);
}

Function pointers

void			listen_keystroke(t_dlist **lst)
{
	char		buffer[8];
	int			el;
	static void	(*f[])(t_dlist **lst) = { lst_validate, lst_del_one,
		lst_del_one, lst_move_left, lst_move_right, lst_move_up,
		lst_move_down, lst_select, lst_esc, lst_void_ret};

	ft_memset(buffer, 0, 8);
	while (read(0, buffer, 8) != -1)
	{
		el = ft_chrmatch(buffer);
		f[el](lst);
		render(find_first(lst), 0);
		ft_memset(buffer, 0, 8);
	}
}

ctrl/cmd + f in .md on :two_: to change with 💕 (about a book in security part, misc, and another part).

In two of your examples here you actually do declaration and assignation on the same line, which does not comply with 42 norm if I'm not mistaken (I might be wrong as it's been a while since I've done C, even more longer using 42's norm).

Also, I could suggest you one more (really) ugly kludge of mine:

if (true)
{
   func1();
   func2();
}

5 lines here

if (true)
   func1();
if (true)
   func2();

Only 4 lines here :)

Thank you for your comprehensive Cheat Sheet I wanted to point out just a small error on this section: https://github.com/agavrel/42_CheatSheet#0x01--terminal-bash

In the following section, "Setting values of a struct to 0 without using memset or bzero", you show how to zero a struct in a norm-complying way (separate declaration and initialization).

t_mystruct mystruct;
(void)mystruct;

I tested the code on mingw_w64 and clang, this doesn't seem to zero the struct. In fact, after some searching, I found the following Stack Overflow question. Apparently this is a no-op.

This might be because I am using a different compiler but unfortunately, the link in "First by installing a C compiler on your computer" to mingw is dead.

I found the following way to zero a struct after declaration, I tested it on mingw_w64 and clang:

t_mystruct mystruct;
mystruct = (t_mystruct){};

Hi! Would it be possible to make the following section gender-neutral and a tick more serious?

"0x07 [Boys Only] Don't waste time flirting : For some who have been living in the basement of their parents' house for years it is a good opportunity to see what a girl looks like in real life. Nevertheless, you have to under that 1/this is not the right time and place to do so."

I know it is meant as a light-hearted joke nodding at the jaded trope of programmers being mostly male and socially inapt. Sometimes that kind of banter might have unintended consequences, such as reinforcing pre-existing discriminatory tropes, or even naturalising behaviour that might be harmful or disrespectful. I believe this is to be the case because it's targeting males as 'potential harassers', considering that flirting in inappropriate moments or when unsolicited is one form of harassment and distress, while it also poorly assumes that boys are exclusively interested in girls, which reinforces the idea of girls as prey to boys.

My suggested revision of that paragraph is as follows:

"0x07 Don't flirt during the piscine. It is not the appropriate time and place to do so. Having someone's attention in a context of mutual helping is not an invitation to flirt, and might come off as distressing or downright disrespectful. Leave it out."

Thanks for your attention. All the best!

// ft_putchar(42 + '0'); // will only print 4
^
|
42 + 48 == 90 == 'Z' (not '4')

I don't really know where you want to link, but I'm guessing is not towards a 404.

Nice article/repo, hope you keep updating it

(Hello from 42 Paris)