pub const fn slice_range<T>(slice: &[T], start: usize, end: usize) -> &[T]
Expand description
A const equivalent of &slice[start..end]
.
If start >= end
or slice.len() < start
, this returns an empty slice.
If slice.len() < end
, this returns the slice from start
.
§Alternatives
For a const equivalent of &slice[start..]
there’s slice_from
.
For a const equivalent of &slice[..end]
there’s slice_up_to
.
§Example
use konst::slice::slice_range;
const FIBB: &[u16] = &[3, 5, 8, 13, 21, 34, 55, 89];
const TWO: &[u16] = slice_range(FIBB, 2, 4);
const FOUR: &[u16] = slice_range(FIBB, 4, 7);
const NONE: &[u16] = slice_range(FIBB, 0, 0);
const ALL: &[u16] = slice_range(FIBB, 0, 1000);
assert_eq!(TWO, &[8, 13]);
assert_eq!(FOUR, &[21, 34, 55]);
assert_eq!(NONE, &[]);
assert_eq!(ALL, FIBB);