Loops

While


while <cond> {
    <body>
};

Example:


use std::*;

fn main() {
let i = 0usize;
while i < 10 {
    c_api::printf("%d\n", i);
    i += 1;
};
}

You can also break out of a loop:


use std::*;

fn main() {
let i = 0usize;
while i < 10 {
    c_api::printf("%d\n", i);
    if i >= 5 { 
        break;
    };
    i += 1;
};
}

Or skip the rest of the loop body this iteration:


use std::*;

fn main() {
let i = 0usize;
while i < 10 {
    i += 1;
    if i >= 5 { 
        c_api::printf("skipping!\n");
        continue;
    };
    c_api::printf("%d\n", i);
};
}

Note: Same as return, break and continue yield a type of unit and any code after is unreachable


let r: unit = return;
let r: unit = break;
let r: unit = continue;

Kommando Docs

Loops

While