Functions

A function can be defined the following way:

#![allow(unused)]

fn main() {
pub fn name(arg1: i32) -> i32 {
    return arg1 * 2;
}

}

• pub: An optional keyword to make the function public outside the module.

The return type can be omited.

Functions can be generic:

#![allow(unused)]

fn main() {
fn name<T>(arg: T) -> T {
    // ...
}


// call it
let x: i32 = name::<i32>(2);

}