FM / detail

/usr/include/boost/type_traits/detail

Name	Size	Mode	Actions
bool_trait_def.hpp	4762	0644	edit dl rm
bool_trait_undef.hpp	929	0644	edit dl rm
common_arithmetic_type.hpp	5585	0644	edit dl rm
common_type_impl.hpp	3028	0644	edit dl rm
composite_member_pointer_type.hpp	2823	0644	edit dl rm
composite_pointer_type.hpp	3624	0644	edit dl rm
config.hpp	4380	0644	edit dl rm
detector.hpp	915	0644	edit dl rm
has_binary_operator.hpp	12287	0644	edit dl rm
has_postfix_operator.hpp	10009	0644	edit dl rm
has_prefix_operator.hpp	10899	0644	edit dl rm
ice_and.hpp	1190	0644	edit dl rm
ice_eq.hpp	1165	0644	edit dl rm
ice_not.hpp	971	0644	edit dl rm
ice_or.hpp	1192	0644	edit dl rm
is_function_cxx_03.hpp	3072	0644	edit dl rm
is_function_cxx_11.hpp	30056	0644	edit dl rm
is_function_msvc10_fix.hpp	1925	0644	edit dl rm
is_function_ptr_helper.hpp	37000	0644	edit dl rm
is_function_ptr_tester.hpp	48427	0644	edit dl rm
is_likely_lambda.hpp	2650	0644	edit dl rm
is_member_function_pointer_cxx_03.hpp	3673	0644	edit dl rm
is_member_function_pointer_cxx_11.hpp	39455	0644	edit dl rm
is_mem_fun_pointer_impl.hpp	145750	0644	edit dl rm
is_mem_fun_pointer_tester.hpp	193755	0644	edit dl rm
is_rvalue_reference_msvc10_fix.hpp	3510	0644	edit dl rm
mp_defer.hpp	1359	0644	edit dl rm
template_arity_spec.hpp	535	0644	edit dl rm
yes_no_type.hpp	726	0644	edit dl rm

Edit: /usr/include/boost/type_traits/detail/mp_defer.hpp (1359B)

#ifndef BOOST_TYPE_TRAITS_DETAIL_MP_DEFER_HPP_INCLUDED
#define BOOST_TYPE_TRAITS_DETAIL_MP_DEFER_HPP_INCLUDED

//
//  Copyright 2015 Peter Dimov
//
//  Distributed under the Boost Software License, Version 1.0.
//  See accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt
//

#include <boost/type_traits/integral_constant.hpp>
#include <boost/type_traits/conditional.hpp>

namespace boost
{

namespace type_traits_detail
{

// mp_valid
// implementation by Bruno Dutra (by the name is_evaluable)

template<template<class...> class F, class... T>
struct mp_valid_impl
{
    template<template<class...> class G, class = G<T...>>
    static boost::true_type check_s(int);

template<template<class...> class>
    static boost::false_type check_s(...);

using type = decltype(check_s<F>(0));
};

template<template<class...> class F, class... T>
using mp_valid = typename mp_valid_impl<F, T...>::type;

// mp_defer

struct mp_empty
{
};

template<template<class...> class F, class... T> struct mp_defer_impl
{
    using type = F<T...>;
};

template<template<class...> class F, class... T> using mp_defer = typename boost::conditional<mp_valid<F, T...>::value, mp_defer_impl<F, T...>, mp_empty>::type;

} // namespace type_traits_detail

} // namespace boost

#endif // #ifndef BOOST_TYPE_TRAITS_DETAIL_MP_DEFER_HPP_INCLUDED

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