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78e1995365
* Add std::equal_to <void> (since C++14) * Add heterogeneous std::equal (since C++14) * Add maybe_const * Add empty_base_optimization * Add is_constructible specialization for pair, tuple * Add aged associative containers: - aged_set, aged_map, aged_multiset, aged_multimap - aged_unordered_set, aged_unordered_map, - aged_unordered_multiset, aged_unordered_multimap * Fix auto keyword pass by reference * Fix basic_seconds_clock warning and project file
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_EQUAL_TO_H_INCLUDED
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#define BEAST_EQUAL_TO_H_INCLUDED
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#include <functional>
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#include <type_traits>
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namespace std {
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#ifndef _MSC_VER
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/** C++14 implementation of std::equal_to <void> specialization.
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This supports heterogeneous comparisons.
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*/
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template <>
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struct equal_to <void>
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{
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// VFALCO NOTE Its not clear how to support is_transparent pre c++14
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typedef std::true_type is_transparent;
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template <class T, class U>
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auto operator() (T&& lhs, U&& rhs) const ->
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decltype (std::forward <T> (lhs) == std::forward <U> (rhs))
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{
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return std::forward <T> (lhs) == std::forward <U> (rhs);
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}
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};
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#endif
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}
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#endif
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