635ce1d127
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@157503 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <unordered_map>
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// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
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// class Alloc = allocator<pair<const Key, T>>>
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// class unordered_map
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// template <class... Args>
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// pair<iterator, bool> emplace(Args&&... args);
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#include <unordered_map>
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#include <cassert>
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#include "../../../Emplaceable.h"
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int main()
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{
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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{
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typedef std::unordered_map<int, Emplaceable> C;
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typedef std::pair<C::iterator, bool> R;
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C c;
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R r = c.emplace(3);
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assert(r.second);
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assert(c.size() == 1);
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assert(r.first->first == 3);
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assert(r.first->second == Emplaceable());
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r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
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assert(r.second);
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assert(c.size() == 2);
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assert(r.first->first == 4);
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assert(r.first->second == Emplaceable(5, 6));
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r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
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std::forward_as_tuple(6, 7));
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assert(r.second);
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assert(c.size() == 3);
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assert(r.first->first == 5);
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assert(r.first->second == Emplaceable(6, 7));
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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