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LESSON 5.4

Keep Only Unique Values: Set

A Set<T> stores unique elements. Adding an element that is already present does not change the set.

Goal Register badges 3, 5, 3, 7, and 5. Print how many unique badges there are and whether badges 5 and 4 are present.

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 badges: Set<Int32> = Set();
    badges.add(3);
    stdout.println(badges.length);
}

⌘ / Ctrl + Enter

Your program output will appear here.

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