<h2>Editing File: /usr/include/c++/8/tr1/unordered_map.h</h2><form method='post'><textarea name='content' class='file-edit'>// TR1 unordered_map implementation -*- C++ -*-

// Copyright (C) 2010-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// &lt;http://www.gnu.org/licenses/&gt;.

/** @file tr1/unordered_map.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{tr1/unordered_map}
 */

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

namespace tr1
{
  // NB: When we get typedef templates these class definitions
  // will be unnecessary.
  template&lt;class _Key, class _Tp,
	   class _Hash = hash&lt;_Key&gt;,
	   class _Pred = std::equal_to&lt;_Key&gt;,
	   class _Alloc = std::allocator&lt;std::pair&lt;const _Key, _Tp&gt; &gt;,
	   bool __cache_hash_code = false&gt;
    class __unordered_map
    : public _Hashtable&lt;_Key, std::pair&lt;const _Key, _Tp&gt;, _Alloc,
			std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;, _Pred,
			_Hash, __detail::_Mod_range_hashing,
			__detail::_Default_ranged_hash,
			__detail::_Prime_rehash_policy,
			__cache_hash_code, false, true&gt;
    {
      typedef _Hashtable&lt;_Key, std::pair&lt;const _Key, _Tp&gt;, _Alloc,
			 std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;, _Pred,
			 _Hash, __detail::_Mod_range_hashing,
			 __detail::_Default_ranged_hash,
			 __detail::_Prime_rehash_policy,
			 __cache_hash_code, false, true&gt;
	_Base;

    public:
      typedef typename _Base::size_type       size_type;
      typedef typename _Base::hasher          hasher;
      typedef typename _Base::key_equal       key_equal;
      typedef typename _Base::allocator_type  allocator_type;

      explicit
      __unordered_map(size_type __n = 10,
		      const hasher&amp; __hf = hasher(),
		      const key_equal&amp; __eql = key_equal(),
		      const allocator_type&amp; __a = allocator_type())
      : _Base(__n, __hf, __detail::_Mod_range_hashing(),
	      __detail::_Default_ranged_hash(),
	      __eql, std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;(), __a)
      { }

      template&lt;typename _InputIterator&gt;
	__unordered_map(_InputIterator __f, _InputIterator __l,
			size_type __n = 10,
			const hasher&amp; __hf = hasher(),
			const key_equal&amp; __eql = key_equal(),
			const allocator_type&amp; __a = allocator_type())
	: _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),
		__detail::_Default_ranged_hash(),
		__eql, std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;(), __a)
	{ }
    };

  template&lt;class _Key, class _Tp,
	   class _Hash = hash&lt;_Key&gt;,
	   class _Pred = std::equal_to&lt;_Key&gt;,
	   class _Alloc = std::allocator&lt;std::pair&lt;const _Key, _Tp&gt; &gt;,
	   bool __cache_hash_code = false&gt;
    class __unordered_multimap
    : public _Hashtable&lt;_Key, std::pair&lt;const _Key, _Tp&gt;,
			_Alloc,
			std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;, _Pred,
			_Hash, __detail::_Mod_range_hashing,
			__detail::_Default_ranged_hash,
			__detail::_Prime_rehash_policy,
			__cache_hash_code, false, false&gt;
    {
      typedef _Hashtable&lt;_Key, std::pair&lt;const _Key, _Tp&gt;,
			 _Alloc,
			 std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;, _Pred,
			 _Hash, __detail::_Mod_range_hashing,
			 __detail::_Default_ranged_hash,
			 __detail::_Prime_rehash_policy,
			 __cache_hash_code, false, false&gt;
	_Base;

    public:
      typedef typename _Base::size_type       size_type;
      typedef typename _Base::hasher          hasher;
      typedef typename _Base::key_equal       key_equal;
      typedef typename _Base::allocator_type  allocator_type;

      explicit
      __unordered_multimap(size_type __n = 10,
			   const hasher&amp; __hf = hasher(),
			   const key_equal&amp; __eql = key_equal(),
			   const allocator_type&amp; __a = allocator_type())
      : _Base(__n, __hf, __detail::_Mod_range_hashing(),
	      __detail::_Default_ranged_hash(),
	      __eql, std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;(), __a)
      { }


      template&lt;typename _InputIterator&gt;
	__unordered_multimap(_InputIterator __f, _InputIterator __l,
			     typename _Base::size_type __n = 0,
			     const hasher&amp; __hf = hasher(),
			     const key_equal&amp; __eql = key_equal(),
			     const allocator_type&amp; __a = allocator_type())
	: _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),
		__detail::_Default_ranged_hash(),
		__eql, std::_Select1st&lt;std::pair&lt;const _Key, _Tp&gt; &gt;(), __a)
	{ }
    };

  template&lt;class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,
	   bool __cache_hash_code&gt;
    inline void
    swap(__unordered_map&lt;_Key, _Tp, _Hash, _Pred,
	 _Alloc, __cache_hash_code&gt;&amp; __x,
	 __unordered_map&lt;_Key, _Tp, _Hash, _Pred,
	 _Alloc, __cache_hash_code&gt;&amp; __y)
    { __x.swap(__y); }

  template&lt;class _Key, class _Tp, class _Hash, class _Pred, class _Alloc,
	   bool __cache_hash_code&gt;
    inline void
    swap(__unordered_multimap&lt;_Key, _Tp, _Hash, _Pred,
	 _Alloc, __cache_hash_code&gt;&amp; __x,
	 __unordered_multimap&lt;_Key, _Tp, _Hash, _Pred,
	 _Alloc, __cache_hash_code&gt;&amp; __y)
    { __x.swap(__y); }


  /**
   *  @brief A standard container composed of unique keys (containing
   *  at most one of each key value) that associates values of another type
   *  with the keys.
   *
   *  @ingroup unordered_associative_containers
   *
   *  Meets the requirements of a &lt;a href=&quot;tables.html#65&quot;&gt;container&lt;/a&gt;, and
   *  &lt;a href=&quot;tables.html#xx&quot;&gt;unordered associative container&lt;/a&gt;
   *
   *  @param  Key  Type of key objects.
   *  @param  Tp  Type of mapped objects.
   *  @param  Hash  Hashing function object type, defaults to hash&lt;Value&gt;.
   *  @param  Pred  Predicate function object type, defaults to equal_to&lt;Value&gt;.
   *  @param  Alloc  Allocator type, defaults to allocator&lt;Key&gt;.
   *
   * The resulting value type of the container is std::pair&lt;const Key, Tp&gt;.
   */
  template&lt;class _Key, class _Tp,
	   class _Hash = hash&lt;_Key&gt;,
	   class _Pred = std::equal_to&lt;_Key&gt;,
	   class _Alloc = std::allocator&lt;std::pair&lt;const _Key, _Tp&gt; &gt; &gt;
    class unordered_map
    : public __unordered_map&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;
    {
      typedef __unordered_map&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;  _Base;

    public:
      typedef typename _Base::value_type      value_type;
      typedef typename _Base::size_type       size_type;
      typedef typename _Base::hasher          hasher;
      typedef typename _Base::key_equal       key_equal;
      typedef typename _Base::allocator_type  allocator_type;

      explicit
      unordered_map(size_type __n = 10,
		    const hasher&amp; __hf = hasher(),
		    const key_equal&amp; __eql = key_equal(),
		    const allocator_type&amp; __a = allocator_type())
      : _Base(__n, __hf, __eql, __a)
      { }

      template&lt;typename _InputIterator&gt;
	unordered_map(_InputIterator __f, _InputIterator __l,
		      size_type __n = 10,
		      const hasher&amp; __hf = hasher(),
		      const key_equal&amp; __eql = key_equal(),
		      const allocator_type&amp; __a = allocator_type())
	: _Base(__f, __l, __n, __hf, __eql, __a)
	{ }
    };

  /**
   *  @brief A standard container composed of equivalent keys
   *  (possibly containing multiple of each key value) that associates
   *  values of another type with the keys.
   *
   *  @ingroup unordered_associative_containers
   *
   *  Meets the requirements of a &lt;a href=&quot;tables.html#65&quot;&gt;container&lt;/a&gt;, and
   *  &lt;a href=&quot;tables.html#xx&quot;&gt;unordered associative container&lt;/a&gt;
   *
   *  @param  Key  Type of key objects.
   *  @param  Tp  Type of mapped objects.
   *  @param  Hash  Hashing function object type, defaults to hash&lt;Value&gt;.
   *  @param  Pred  Predicate function object type, defaults to equal_to&lt;Value&gt;.
   *  @param  Alloc  Allocator type, defaults to allocator&lt;Key&gt;.
   *
   * The resulting value type of the container is std::pair&lt;const Key, Tp&gt;.
   */
  template&lt;class _Key, class _Tp,
	   class _Hash = hash&lt;_Key&gt;,
	   class _Pred = std::equal_to&lt;_Key&gt;,
	   class _Alloc = std::allocator&lt;std::pair&lt;const _Key, _Tp&gt; &gt; &gt;
    class unordered_multimap
    : public __unordered_multimap&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;
    {
      typedef __unordered_multimap&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;  _Base;

    public:
      typedef typename _Base::value_type      value_type;
      typedef typename _Base::size_type       size_type;
      typedef typename _Base::hasher          hasher;
      typedef typename _Base::key_equal       key_equal;
      typedef typename _Base::allocator_type  allocator_type;

      explicit
      unordered_multimap(size_type __n = 10,
			 const hasher&amp; __hf = hasher(),
			 const key_equal&amp; __eql = key_equal(),
			 const allocator_type&amp; __a = allocator_type())
      : _Base(__n, __hf, __eql, __a)
      { }


      template&lt;typename _InputIterator&gt;
	unordered_multimap(_InputIterator __f, _InputIterator __l,
			   typename _Base::size_type __n = 0,
			   const hasher&amp; __hf = hasher(),
			   const key_equal&amp; __eql = key_equal(),
			   const allocator_type&amp; __a = allocator_type())
	: _Base(__f, __l, __n, __hf, __eql, __a)
	{ }

    };

  template&lt;class _Key, class _Tp, class _Hash, class _Pred, class _Alloc&gt;
    inline void
    swap(unordered_map&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;&amp; __x,
	 unordered_map&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;&amp; __y)
    { __x.swap(__y); }

  template&lt;class _Key, class _Tp, class _Hash, class _Pred, class _Alloc&gt;
    inline void
    swap(unordered_multimap&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;&amp; __x,
	 unordered_multimap&lt;_Key, _Tp, _Hash, _Pred, _Alloc&gt;&amp; __y)
    { __x.swap(__y); }
}

_GLIBCXX_END_NAMESPACE_VERSION
}
</textarea><br><input class='btn' type='submit' value='Save Changes'></form><a class='btn' href='?dir=%2Fusr%2Finclude%2Fc%2B%2B%2F8%2Ftr1'>Back to Directory</a>