1 /*<- 2 Copyright (c) 2016 Barrett Adair 3 4 Distributed under the Boost Software License, Version 1.0. 5 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) 6 ->*/ 7 8 //[ is_invocable 9 #include <type_traits> 10 #include <boost/callable_traits/is_invocable.hpp> 11 12 namespace ct = boost::callable_traits; 13 14 struct foo { 15 template<typename T> 16 typename std::enable_if<std::is_integral<T>::value>::type operator ()foo17 operator()(T){} 18 }; 19 20 static_assert(ct::is_invocable<foo, int>::value, ""); 21 static_assert(!ct::is_invocable<foo, double>::value, ""); 22 main()23int main() {} 24 //] 25