📌 Enumy

Enumy definiują zbiór nazwanych stałych.

Podstawowy enum

enum Color { RED, GREEN, BLUE }

print(Color.RED);    // 0
print(Color.GREEN);  // 1
print(Color.BLUE);   // 2
        

Enum z wartościami

enum Status {
    PENDING = 1,
    ACTIVE = 2,
    DONE = 3
}

print(Status.PENDING);  // 1
print(Status.ACTIVE);   // 2
        

Użycie w warunkach

enum Priority { LOW, MEDIUM, HIGH }

fn processTask(task) {
    if (task.priority == Priority.HIGH) {
        print("Processing HIGH priority!");
    }
}

let task = {name: "Important", priority: Priority.HIGH};
processTask(task);
        

Enum w when/switch

enum Direction { UP, DOWN, LEFT, RIGHT }

fn move(dir) {
    let result = when dir {
        Direction.UP -> "Moving up",
        Direction.DOWN -> "Moving down",
        Direction.LEFT -> "Moving left",
        Direction.RIGHT -> "Moving right",
        _ -> "Unknown direction"
    };
    return result;
}

print(move(Direction.UP));  // "Moving up"
        