Functions and callbacks

void CreateLeaderstats(Player player) {
    return;
}

const int DoubleCoins(int coins) {
    return coins;
}

• Only functions with a body emit from .clp / .clpp.
• Prototypes in .clh become export type fields.
• No overloading. No default arguments.
• void init() is the script entry. No int main().

Anonymous callbacks

Write func (params) { }. There are no C++ captures [x] / [&].

func onCoinsChanged = func (int newValue) {
    post("New value: " .: newValue);
};

players.PlayerAdded~>Connect(func (Player playerEntered) {
    post("New player: " .: playerEntered.Name);
});

Luau still closes over outer locals. Keep Instances alive with Janitor.

Passing a method by name from inside Class:: binds self.

async

async Data FetchData(Player player) {
    Data data = await DataService.Server.WaitFor(player);
    return data;
}

Covered in Concurrency. Next: Control flow.