An array is a fixed-size sequence of
N elements of type
T. The array type
is written as
[T; N]. The size is an expression that evaluates to a
// A stack-allocated array let array: [i32; 3] = [1, 2, 3]; // A heap-allocated array, coerced to a slice let boxed_array: Box<[i32]> = Box::new([1, 2, 3]);
All elements of arrays are always initialized, and access to an array is always bounds-checked in safe methods and operators.
Vec<T>standard library type provides a heap-allocated resizable array type.