Interface CtSelectArray

ctutils/src/traits/ct_select.rs:46–52

Implementing this trait enables use of the [`CtSelect`] trait to construct `[T; N]` where `T` is the `Self` type implementing the trait, via a blanket impl. All types which impl [`Clone`] + [`CtAssignSlice`] + [`CtSelect`] will receive a blanket impl of this trait and thus also be usable with the [`CtSelect`] impl for `[T; N]`.

/// All types which impl [`Clone`] + [`CtAssignSlice`] + [`CtSelect`] will receive a blanket impl
/// of this trait and thus also be usable with the [`CtSelect`] impl for `[T; N]`.
pub trait CtSelectArray<const N: usize>: CtSelect + Sized {
    /// Select between `a` and `b` in constant-time based on `choice`.
    #[must_use]
    fn ct_select_array(a: &[Self; N], b: &[Self; N], choice: Choice) -> [Self; N] {
        core::array::from_fn(|i| Self::ct_select(&a[i], &b[i], choice))
    }
}

impl<T, const N: usize> CtSelect for [T; N]
where