Function unarray::build_array

pub fn build_array<T, const N: usize, F: FnMut(usize) -> T>(f: F) -> [T; N]

Build an array with a function that creates elements based on their index

let array: [usize; 5] = build_array(|i| i * 2);
assert_eq!(array, [0, 2, 4, 6, 8]);

For builder functions which might fail, consider using build_array_result or build_array_option