209

submitted 1 month ago by Stamau123@lemmy.world to c/196@lemmy.blahaj.zone

26 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[-] bi_tux@lemmy.world 14 points 1 month ago* (last edited 1 month ago)

RWIIR!!!

edit: here, I did it for you:

use std::*;

static mut sucked: bool = false;

fn main() {
        unsafe {
                check_sucked();
        }
        println!("Kris has been sucked is {}", sucked)
}

unsafe fn check_sucked() {
        if !sucked {
                suck();
        }
}

fn suck() {
        sucked = true;
}

edit 2: fixed it

[-] RacoonVegetable@reddthat.com 19 points 1 month ago

use std

Oh no….

[-] zea_64@lemmy.blahaj.zone 12 points 1 month ago

const mut...

[-] bi_tux@lemmy.world 4 points 1 month ago

I like to live unsafe

[-] zea_64@lemmy.blahaj.zone 6 points 1 month ago

If you made it static, sure, but right now you're living compiler error

[-] bi_tux@lemmy.world 3 points 1 month ago* (last edited 1 month ago)

oh well, I'm just starting to learn the language and come from java, so I thought: wait, it can't be static

[-] zea_64@lemmy.blahaj.zone 3 points 1 month ago

const is more like C++ constexpr, but static is similar to static from C: it's a variable that lives outside any scope. Of course, that means the same static can be accessed by multiple threads, so writing to a static is unsafe (except for types like Mutex, you can safely use those to write, but your static won't be declared mut)