EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/callable_traits/example/return_type.cpp

/*!<-
Copyright (c) 2016 Barrett Adair

Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
->*/

#include <boost/callable_traits/detail/config.hpp>
#ifdef BOOST_CLBL_TRTS_DISABLE_ABOMINABLE_FUNCTIONS
int main(){ return 0; }
#else

//[ return_type
#include <type_traits>
#include <boost/callable_traits.hpp>

namespace ct = boost::callable_traits;

using expect = int;

struct foo;

template<typename T>
void test() {
    using result = ct::return_type_t<T>;
    static_assert(std::is_same<expect, result>{}, "");
}

int main() {

    test<int()>();
    test<int(*)()>();
    test<int(&)()>();
    test<int() const>();
    test<int(foo::*)() const>();

    auto x = []() -> int { return 0; };

    test<decltype(x)>();
}
//]
#endif //#ifdef BOOST_CLBL_TRTS_DISABLE_ABOMINABLE_FUNCTIONS