Macro konst::slice::slice_concat

source · 
macro_rules! slice_concat {
    ($elem_ty:ty, $slice:expr $(,)*) => { ... };
}
Expand description

Macro equivalent of <[&[T]]>::concat, which takes a constant as an argument.

This acts like a compile-time-evaluated version of this function:

pub const fn slice_concat<T>(slices: &'static [&'static [T]]) -> [T; LEN]
where
    T: Copy

Where LEN is the summed length of all inner slices.

§Example

use konst::slice::slice_concat;

const S: &[&[u8]] = &[&[3, 5], &[8, 13, 21, 34]];
assert_eq!(slice_concat!(u8, S), [3, 5, 8, 13, 21, 34]);

assert_eq!(slice_concat!(u8, &[]), []);

assert_eq!(slice_concat!(u8, &[&[], &[1, 2, 3], &[4, 5]]), [1, 2, 3, 4, 5]);