Sum a list

1 min read

Add several numbers stored in a list. This example combines creating a collection, visiting its items, and updating a running total.

import system;
import system.collections;

fun main() {
    let xs = List<int>();
    xs.push(10);
    xs.push(20);
    xs.push(30);

    let total = 0;
    for (let n in xs) {
        total = total + n;
    }
    System.println(total); // 60
}

List needs import system.collections;. for (let n in xs) sets n to each element.