Functions in Practice

Overview

A small example showing function calls, return values, and keyword arguments.

Syntax

fn add(a: int, b: int) -> int {
    return a + b;
}

Example

fn add(a: int, b: int) -> int {
    return a + b;
}

fn describe(name: str, score: int) {
    say(name, "scored", score);
}

result: int = add(3, 4);
describe(score: result, name: "Echo");

Output

Echo scored 7

Notes

• Keyword arguments work for user-defined functions.
• Return types are checked when annotated.

See Also

• Functions
• Scope, use, and watch