Added overload of contains<> for tuple

2026-07-29 23:33:05 +04:00 · 2019-06-20 14:36:16 +03:00
parent 1d2ef6b2a1
commit 7c0a9ff4c1
1 changed files with 3 additions and 0 deletions
@@ -91,6 +91,9 @@ namespace detail
    template <typename T1, typename T2, typename... Ts>
    struct contains<T1, T2, Ts...> : std::integral_constant<bool, std::is_same<T1, T2>::value ||
                                                                  contains<T1, Ts...>::value> {};
+    template<typename T, typename... Types>
+    struct contains<T, std::tuple<Types...>> : std::integral_constant<bool, contains<T, Types...>::value> {};
+
    template <typename...>
    struct all_unique : std::true_type{};