diff options
Diffstat (limited to 'sigc++/tuple-utils')
| -rw-r--r-- | sigc++/tuple-utils/tuple_transform_each.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sigc++/tuple-utils/tuple_transform_each.h b/sigc++/tuple-utils/tuple_transform_each.h index 069e3a9..463925d 100644 --- a/sigc++/tuple-utils/tuple_transform_each.h +++ b/sigc++/tuple-utils/tuple_transform_each.h @@ -32,6 +32,7 @@ template <template <typename> class T_transformer, std::size_t size_from_index> struct tuple_transform_each_impl { // TODO: Avoid the need to pass t_original all the way into the recursion? template <typename T_current, typename T_original> + constexpr static decltype(auto) tuple_transform_each(T_current&& t, T_original& t_original) { //We use std::decay_t<> because tuple_size is not defined for references. @@ -66,7 +67,9 @@ struct tuple_transform_each_impl { template <template <typename> class T_transformer> struct tuple_transform_each_impl<T_transformer, 1> { template <typename T_current, typename T_original> - static decltype(auto) + constexpr + static + decltype(auto) tuple_transform_each(T_current&& t, T_original& t_original) { //We use std::decay_t<> because tuple_size is not defined for references. constexpr auto size = std::tuple_size<std::decay_t<T_current>>::value; @@ -89,7 +92,9 @@ struct tuple_transform_each_impl<T_transformer, 1> { template <template <typename> class T_transformer> struct tuple_transform_each_impl<T_transformer, 0> { template <typename T_current, typename T_original> - static decltype(auto) + constexpr + static + decltype(auto) tuple_transform_each(T_current&& t, T_original& /* t_original */) { //Do nothing because the tuple has no elements. return std::forward<T_current>(t); @@ -103,6 +108,7 @@ struct tuple_transform_each_impl<T_transformer, 0> { * in the original tuple. */ template <template <typename> class T_transformer, typename T> +constexpr decltype(auto) tuple_transform_each(T&& t) { //We use std::decay_t<> because tuple_size is not defined for references. |