Functions

Defining functions

pub static fn square(value: i32) -> i32 {
    return value * value;
}

Visibility

pub makes a function visible to other files. Without it the function belongs to the file that declares it, and that is narrower than its namespace: two files sharing a namespace still cannot call each other's private functions.

pub fn shared() -> i32 {
    return 1;
}

fn local() -> i32 {
    return 2;
}

note

This applies to free functions. A function declared inside a type is scoped to that type rather than to the file.

Calling functions

let result = square(32);