/*
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Copyright 2017-2018 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt
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or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_TT_IS_DETECTED_HPP_INCLUDED
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#define BOOST_TT_IS_DETECTED_HPP_INCLUDED
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#include <boost/type_traits/detail/detector.hpp>
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#include <boost/type_traits/nonesuch.hpp>
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namespace boost {
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template<template<class...> class Op, class... Args>
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using is_detected = typename
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detail::detector<nonesuch, void, Op, Args...>::value_t;
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#if !defined(BOOST_NO_CXX14_VARIABLE_TEMPLATES)
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template<template<class...> class Op, class... Args>
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constexpr bool is_detected_v = is_detected<Op, Args...>::value;
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#endif
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} /* boost */
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#endif
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