| 1 | #pragma once | 
|---|---|
| 2 | |
| 3 | #include <tuple> | 
| 4 | #include <type_traits> | 
| 5 | |
| 6 | |
| 7 | template <typename T> | 
| 8 | struct function_traits; | 
| 9 | |
| 10 | template <typename ReturnType, typename... Args> | 
| 11 | struct function_traits<ReturnType(Args...)> | 
| 12 | { | 
| 13 | using result = ReturnType; | 
| 14 | using arguments = std::tuple<Args...>; | 
| 15 | using arguments_decay = std::tuple<typename std::decay<Args>::type...>; | 
| 16 | }; | 
| 17 | 
