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-rw-r--r--src/core/templates.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/core/templates.h b/src/core/templates.h
index 833bb5b..c363a16 100644
--- a/src/core/templates.h
+++ b/src/core/templates.h
@@ -13,4 +13,17 @@ struct parameter_pack_index<T, TL0, TL...> {
static constexpr size_t value =
1u + parameter_pack_index<T, TL...>::value;
};
+
+template <size_t N, class... T> struct parameter_pack_type;
+
+template <class TN, class... T> struct parameter_pack_type<0, TN, T...> {
+ using type = TN;
+};
+
+template <size_t N, class TN, class... T>
+struct parameter_pack_type<N, TN, T...> {
+ static_assert(sizeof...(T) > 0, "Exhausted parameters");
+ using type = typename parameter_pack_type<N - 1, T...>::type;
+};
+
}