Just a good example to describe why you will like haxe abstracts from @nadako

Test.hx

abstract UserId(Int) {
    inline function new(id) {
        this = id;
    }
    
    public static inline function generate():UserId {
        return new UserId(Std.random(100));
    }
}

abstract Money(Int) {
    public inline function new(name) {
        this = name;
    }
    
    public inline function toString() {
        return 'USD$this';
    }
}

class Test {
    static function main() {
        var user = UserId.generate();
        var money = new Money(15);
        giveMoney(user, money);
        // Error: Money should be UserId (не перепутаешь)
        // giveMoney(money, user); 
    }
    
    static function giveMoney(user:UserId, amount:Money) {
        trace('Giving $amount money to user $user');
    }
}