Function konst::slice::split_first [−][src]
pub const fn split_first<T>(slice: &[T]) -> Option<(&T, &[T])>
Expand description
A const equivalent of
<[T]>::split_first
Example
use konst::slice; const fn add_up(mut slice: &[u32]) -> u64 { let mut ret = 0u64; while let Some((first, rem)) = slice::split_first(slice) { ret += *first as u64; // advances the slice slice = rem; } ret } assert_eq!(add_up(&[1]), 1); assert_eq!(add_up(&[1, 2]), 3); assert_eq!(add_up(&[1, 2, 3]), 6); assert_eq!(add_up(&[1, 2, 3, 4]), 10);