Tuples

fn main() {
    let t: (i8, bool) = (7, true);
    dbg!(t.0);
    dbg!(t.1);
}
This slide should take about 5 minutes.

  • Like arrays, tuples have a fixed length.

  • Tuples group together values of different types into a compound type.

  • Fields of a tuple can be accessed by the period and the index of the value, e.g. t.0, t.1.

  • The empty tuple () is referred to as the “unit type” and signifies absence of a return value, akin to void in other languages.

  • Unlike arrays, tuples cannot be used in a for loop. This is because a for loop requires all the elements to have the same type, which may not be the case for a tuple.

  • There is no way to add or remove elements from a tuple. The number of elements and their types are fixed at compile time and cannot be changed at runtime.