Function konst::slice::split_first_mut

pub const fn split_first_mut<T>(slice: &mut [T]) -> Option<(&mut T, &mut [T])>

This is supported on crate features mut_refs or nightly_mut_refs only.

A const equivalent of <[T]>::split_first_mut

Example

use konst::slice;

assert_eq!(slice::split_first_mut(&mut [5, 8, 13, 21]), Some((&mut 5, &mut [8, 13, 21][..])));
assert_eq!(slice::split_first_mut(&mut [8, 13, 21]), Some((&mut 8, &mut [13, 21][..])));
assert_eq!(slice::split_first_mut(&mut [13, 21]), Some((&mut 13, &mut [21][..])));
assert_eq!(slice::split_first_mut(&mut [21]), Some((&mut 21, &mut [][..])));
assert_eq!(slice::split_first_mut::<()>(&mut []), None);