Lists

Calibre uses list:<T> for ordered collections.

let numbers : list:<int> = list:<int>[1, 2, 3];
// The type list:<str> will be inferred from the values in the list
let words := ["alpha", "beta", "gamma"];

If the type is clear from context, you can also write an empty list with [].

let mut values : list:<int> = [];

Lists can be indexed with [].

let numbers := [10, 20, 30];

print(numbers[0]);
print(numbers[1]);

The standard library provides many useful list methods.

let mut numbers := list:<int>[1, 2, 3];
numbers.push(4);

print(numbers.len());
print(numbers.contains(2));
print(numbers.pop());

Lists are one of the most common collection types in Calibre, and you will see them often in loops, comprehensions, and iterators.