comparison.h

#pragma once
#include <initializer_list>
 
namespace util {

template <typename T>
constexpr bool one_of(T value, std::initializer_list<T> comparators) {
    for (auto& comparator : comparators) {
        if (value == comparator) {
            return true;
        }
    }
    return false;
}

template <typename T, typename... Ts>
constexpr bool one_of(T value, Ts... comparators) {
    for (auto& comparator : {comparators...}) {
        if (value == comparator) {
            return true;
        }
    }
    return false;
}
 
} // namespace util