FM / callable

/usr/include/boost/callable_traits

Name	Size	Mode	Actions
detail/	-	0755	rm
add_member_const.hpp	3143	0644	edit dl rm
add_member_cv.hpp	3103	0644	edit dl rm
add_member_lvalue_reference.hpp	3715	0644	edit dl rm
add_member_rvalue_reference.hpp	3750	0644	edit dl rm
add_member_volatile.hpp	3152	0644	edit dl rm
add_noexcept.hpp	3183	0644	edit dl rm
add_transaction_safe.hpp	3380	0644	edit dl rm
add_varargs.hpp	2544	0644	edit dl rm
apply_member_pointer.hpp	4188	0644	edit dl rm
apply_return.hpp	3344	0644	edit dl rm
args.hpp	3582	0644	edit dl rm
class_of.hpp	1718	0644	edit dl rm
function_type.hpp	3588	0644	edit dl rm
has_member_qualifiers.hpp	3153	0644	edit dl rm
has_varargs.hpp	2785	0644	edit dl rm
has_void_return.hpp	2777	0644	edit dl rm
is_const_member.hpp	2880	0644	edit dl rm
is_cv_member.hpp	2786	0644	edit dl rm
is_invocable.hpp	2839	0644	edit dl rm
is_lvalue_reference_member.hpp	2943	0644	edit dl rm
is_noexcept.hpp	2786	0644	edit dl rm
is_reference_member.hpp	2879	0644	edit dl rm
is_rvalue_reference_member.hpp	2950	0644	edit dl rm
is_transaction_safe.hpp	2983	0644	edit dl rm
is_volatile_member.hpp	2907	0644	edit dl rm
qualified_class_of.hpp	2344	0644	edit dl rm
remove_member_const.hpp	2511	0644	edit dl rm
remove_member_cv.hpp	2523	0644	edit dl rm
remove_member_reference.hpp	2522	0644	edit dl rm
remove_member_volatile.hpp	2565	0644	edit dl rm
remove_noexcept.hpp	2570	0644	edit dl rm
remove_transaction_safe.hpp	2769	0644	edit dl rm
remove_varargs.hpp	2586	0644	edit dl rm
return_type.hpp	2270	0644	edit dl rm

Edit: /usr/include/boost/callable_traits/apply_return.hpp (3344B)

@Copyright Barrett Adair 2015-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

#ifndef BOOST_CLBL_TRTS_APPLY_RETURN_HPP
#define BOOST_CLBL_TRTS_APPLY_RETURN_HPP

#include <boost/callable_traits/detail/core.hpp>

namespace boost { namespace callable_traits {

BOOST_CLBL_TRTS_DEFINE_SFINAE_ERROR_ORIGIN(apply_return)
BOOST_CLBL_TRTS_SFINAE_MSG(apply_return, invalid_types_for_apply_return)

namespace detail {

template<typename T, typename R>
    struct apply_return_helper {
        using type = typename detail::traits<T>::template apply_return<R>;
    };

//special case
    template<typename... Args, typename R>
    struct apply_return_helper<std::tuple<Args...>, R> {
        using type = R(Args...);
    };
}

//[ apply_return_hpp
/*`
[section:ref_apply_return apply_return]
[heading Header]
``#include <boost/callable_traits/apply_return.hpp>``
[heading Definition]
*/

template<typename T, typename R>
using apply_return_t = //see below
//<-
    detail::try_but_fail_if_invalid<
        typename detail::apply_return_helper<T, R>::type,
        invalid_types_for_apply_return>;

namespace detail {

template<typename T, typename R, typename = std::false_type>
    struct apply_return_impl {};

template<typename T, typename R>
    struct apply_return_impl <T, R, typename std::is_same<
        apply_return_t<T, R>, detail::dummy>::type>
    {
        using type = apply_return_t<T, R>;
    };
}
    //->

template<typename T, typename R>
struct apply_return : detail::apply_return_impl<T, R> {};

//<-
}} // namespace boost::callable_traits
//->

/*`
[heading Constraints]
* `T` must one of the following:
  * `std::tuple` template instantiation
  * function
  * function pointer
  * function reference
  * member function pointer
  * member data pointer
* If `T` is a pointer, it may not be cv/ref qualified

[heading Behavior]
* When `T` is `std::tuple<Args...>`, the aliased type is `R(Args...)`.
* When `T` is a function, function pointer, function reference, or member function pointer, the aliased type's return type is `R`, but is otherwise identical to `T`.
* When `T` is a member data pointer of class `foo` to a `U` type (such that `T` is `U foo::*`), the aliased type is `R foo::*`.

[heading Input/Output Examples]
[table
    [[`T`]                              [`apply_return_t<T, float>`]]
    [[`std::tuple<int, int>`]           [`float(int, int)`]]
    [[`int()`]                          [`float()`]]
    [[`int (&)()`]                      [`float(&)()`]]
    [[`int (*)()`]                      [`float(*)()`]]
    [[`int (*)(...)`]                   [`float(*)()`]]
    [[`int(foo::*)()`]                  [`float(foo::*)()`]]
    [[`int(foo::*)() &`]                [`float(foo::*)() &`]]
    [[`int(foo::*)() &&`]               [`float(foo::*)() &&`]]
    [[`int(foo::*)() const`]            [`float(foo::*)() const`]]
    [[`int(foo::*)() transaction_safe`] [`float(foo::*)() transaction_safe`]]
    [[`int foo::*`]                     [`float foo::*`]]
    [[`int`]                            [(substitution failure)]]
    [[`int (*const)()`]                 [(substitution failure)]]
]

[heading Example Program]
[/import ../example/apply_return.cpp]
[apply_return]
[endsect]
*/
//]
#endif

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