🔬 This is a nightly-only experimental API. (
array_from_fn #89379)
Expand description
Creates an array [T; N] where each array element T is returned by the cb call.
cb: Callback where the passed argument is the current array index.
#![feature(array_from_fn)]
let array = core::array::from_fn(|i| i);
assert_eq!(array, [0, 1, 2, 3, 4]);
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