41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include <mbgl/util/util.hpp>
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
#include <cstddef>
|
|
#include <tuple>
|
|
#include <type_traits>
|
|
|
|
namespace mbgl {
|
|
namespace util {
|
|
|
|
template <typename To, typename From, std::size_t Size>
|
|
constexpr std::array<To, Size> convert(const std::array<From, Size>& from)
|
|
requires(std::is_convertible_v<From, To>)
|
|
{
|
|
std::array<To, Size> to{{}};
|
|
std::copy(std::begin(from), std::end(from), std::begin(to));
|
|
return to;
|
|
}
|
|
|
|
template <typename To, typename From, std::size_t Size>
|
|
constexpr std::array<To, Size> cast(const std::array<From, Size>& from)
|
|
requires(std::is_assignable_v<To&, From>)
|
|
{
|
|
std::array<To, Size> to{{}};
|
|
std::transform(std::begin(from), std::end(from), std::begin(to), [](From x) { return static_cast<To>(x); });
|
|
return to;
|
|
}
|
|
|
|
/// Convert an `N`-tuple of all `T`s to `array<T,N>`
|
|
template <typename... Ts>
|
|
inline constexpr auto to_array(std::tuple<Ts...>&& tuple) {
|
|
return std::apply([](auto&&... x) { return std::array{std::forward<decltype(x)>(x)...}; },
|
|
std::forward<std::tuple<Ts...>>(tuple));
|
|
}
|
|
|
|
} // namespace util
|
|
} // namespace mbgl
|