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LESSON 5.3

Find a Value by Key: Map

A Map<K, V> connects keys to values: set stores a value, get_or_null looks it up ( null when absent), and ?? supplies a fallback.

Goal Store uno in locker 1 and dos in locker 2, then look up lockers 2 and 3.

Write a Zirk program, then run it to see the world react.

Your code

main.zirk

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Zirk

import { stdout } from std.io;

fn main(): Void {
    mut lockers: Map<Int32, String> = Map();
    lockers.set(1, "uno");
    stdout.println(lockers.length);
}

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Output

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