Tuples

A tuple is a fixed-length, heterogeneous sequence — an anonymous product type where each position can hold a different type. Tuple types are written as a parenthesized list.

let pair: (int, int) = (0, 1);
let mixed: (float, str) = (0.1, "hello!");

Reach into a tuple by position with dot-and-index:

let mixed = (0.1, "hello!");
let x: float = mixed.0; // 0.1
let s: str   = mixed.1; // "hello!"

Because each position can be a different type, a tuple is not iterable — a single loop binding would have no consistent type to take. That’s the whole reason index access exists. To pull a tuple apart in one step, match on it:

let point = (3, 4);
let sum = match point {
    (a, b) => a + b,
};
// -> 7

You can also destructure a tuple straight into a let, binding each position at once:

let (x, y) = (3, 4); // x is 3, y is 4