Function konst::slice::slice_from_mut

pub const fn slice_from_mut<T>(slice: &mut [T], start: usize) -> &mut [T]

This is supported on crate features mut_refs or nightly_mut_refs only.

A const equivalent of &mut slice[start..].

If slice.len() < start, this simply returns an empty slice.

Performance

If the “constant_time_slice” feature is disabled, thich takes linear time to remove the leading elements, proportional to start.

If the “constant_time_slice” feature is enabled, it takes constant time to run, but uses a few nightly features.

Example

use konst::slice::slice_from_mut;

let mut fibs = [3, 5, 8, 13, 21, 34, 55, 89];

assert_eq!(slice_from_mut(&mut fibs, 0), &mut [3, 5, 8, 13, 21, 34, 55, 89]);
assert_eq!(slice_from_mut(&mut fibs, 1), &mut [5, 8, 13, 21, 34, 55, 89]);
assert_eq!(slice_from_mut(&mut fibs, 2), &mut [8, 13, 21, 34, 55, 89]);
assert_eq!(slice_from_mut(&mut fibs, 6), &mut [55, 89]);
assert_eq!(slice_from_mut(&mut fibs, 7), &mut [89]);
assert_eq!(slice_from_mut(&mut fibs, 8), &mut []);
assert_eq!(slice_from_mut(&mut fibs, 1000), &mut []);