StarMirror/sol2
1
0
Fork 0
mirror of https://github.com/ThePhD/sol2.git synced 2024-03-22 13:10:44 +08:00
Code Issues Projects Releases Wiki Activity

Add key value pair trait

Browse Source
This commit is contained in:
Rapptz 2014-05-31 21:10:42 -04:00
parent 5c8f661447
commit eedb2a1796
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sol/traits.hpp
View File

@ -170,6 +170,20 @@ struct has_begin_end_impl {
template<typename T> template<typename T>
struct has_begin_end : decltype(has_begin_end_impl::test<T>(0)) {}; struct has_begin_end : decltype(has_begin_end_impl::test<T>(0)) {};
struct has_key_value_pair_impl {
template<typename T, typename U = Unqualified<T>,
typename V = typename U::value_type,
typename F = decltype(std::declval<V&>().first),
typename S = decltype(std::declval<V&>().second)>
static std::true_type test(int);
template<typename...>
static std::false_type test(...);
};
template<typename T>
struct has_key_value_pair : decltype(has_key_value_pair_impl::test<T>(0)) {};
} // sol } // sol
#endif // SOL_TRAITS_HPP #endif // SOL_TRAITS_HPP