Fuct wrappers example
func2.cpp
- func2.cpp
/*
*
* Author, Copyright: Oleg Borodin <onborodin@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
#include <iostream>
#include <functional>
#include <string>
#if 0
template<typename F, typename... ARGS>
typename std::result_of<F(ARGS...)>::type
runner(F&& f, ARGS&&... args) {
return f(args...);
}
#endif
template<typename F, typename... ARGS>
auto runner(F&& f, ARGS&&... args) -> decltype(f(args...)) {
return f(args...);
}
int main(int argc, char **argv) {
auto hello = [](std::string msg) -> std::string {
return msg;
};
std::cout << runner(hello, "hello") << std::endl;
return 0;
}
func4.cpp