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    Making a const version of Rust's array::from_fn - How hard can it be? rust gendignoux.com
    gendx avatar authored by gendx 8 months ago |
    Archive.org Archive.today Ghostarchive
    | 1 comment
    1. 2
      peter avatar peter 8 months ago

      I’m sure the author already knows this, but you could accomplish the stated goal for the SIMD swizzle use case with a const fn:

      impl<const N: usize> Swizzle<N> for FetchEven<N> {
    const INDEX: [usize; N] = compute_FetchEven_INDEX();
}

      Full playground with FetchEven and SwapPairs examples.