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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
55 lines
1.7 KiB
C++
55 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_CONTAINER_AGED_ASSOCIATIVE_CONTAINER_H_INCLUDED
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#define BEAST_CONTAINER_AGED_ASSOCIATIVE_CONTAINER_H_INCLUDED
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#include <type_traits>
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namespace beast {
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namespace detail {
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// Extracts the key portion of value
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template <bool maybe_map>
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struct aged_associative_container_extract_t
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{
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template <class Value>
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decltype (Value::first) const&
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operator() (Value const& value) const
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{
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return value.first;
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}
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};
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template <>
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struct aged_associative_container_extract_t <false>
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{
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template <class Value>
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Value const&
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operator() (Value const& value) const
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{
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return value;
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}
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};
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}
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}
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#endif
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