#pragma once #include <algorithm> // IWYU pragma: keep #include <array> #include <cstddef> template<typename T, std::size_t N> constexpr auto transform_array(const std::array<T, N> & in, auto && transform) { std::array<decltype(transform(in.front())), N> out {}; std::transform(in.begin(), in.end(), out.begin(), transform); return out; }