meta.h

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#ifndef WXM_META_H
#define WXM_META_H
 
#include <vector>
#include <algorithm>
 
 
namespace wxm
{
namespace meta
{
 
template<bool... Vals> struct all
{
    constexpr static bool value = true;
};
 
template<bool... Vals> struct all<false, Vals...>
{
    constexpr static bool value = false;
};
 
template<bool... Vals> struct all<true, Vals...>
{
    constexpr static bool value = all<Vals...>::value;
};
 
template<typename T>
std::vector<T> apply_permutation(std::vector<T>&& vec, const std::vector<std::size_t>& p)
{
    std::vector<T> sorted_vec(vec.size());
    std::transform(p.begin(), p.end(), sorted_vec.begin(), [&](std::size_t i) {
        return std::move(vec[i]);
    });
    return sorted_vec;
}
} // namespace meta
} // namespace wxm
 
#endif