<h2>Editing File: /usr/include/c++/8/tr1/array</h2><form method='post'><textarea name='content' class='file-edit'>// class template array -*- C++ -*-

// Copyright (C) 2004-2018 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/array
 *  This is a TR1 C++ Library header. 
 */

#ifndef _GLIBCXX_TR1_ARRAY
#define _GLIBCXX_TR1_ARRAY 1

#pragma GCC system_header

#include &lt;bits/stl_algobase.h&gt;

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

namespace tr1
{
  /**
   *  @brief A standard container for storing a fixed size sequence of elements.
   *
   *  @ingroup sequences
   *
   *  Meets the requirements of a &lt;a href=&quot;tables.html#65&quot;&gt;container&lt;/a&gt;, a
   *  &lt;a href=&quot;tables.html#66&quot;&gt;reversible container&lt;/a&gt;, and a
   *  &lt;a href=&quot;tables.html#67&quot;&gt;sequence&lt;/a&gt;.
   *
   *  Sets support random access iterators.
   *
   *  @param  Tp  Type of element. Required to be a complete type.
   *  @param  N  Number of elements.
  */
  template&lt;typename _Tp, std::size_t _Nm&gt;
    struct array
    {
      typedef _Tp 	    			      value_type;
      typedef value_type&amp;                   	      reference;
      typedef const value_type&amp;             	      const_reference;
      typedef value_type*          		      iterator;
      typedef const value_type*			      const_iterator;
      typedef std::size_t                    	      size_type;
      typedef std::ptrdiff_t                   	      difference_type;
      typedef std::reverse_iterator&lt;iterator&gt;	      reverse_iterator;
      typedef std::reverse_iterator&lt;const_iterator&gt;   const_reverse_iterator;

      // Support for zero-sized arrays mandatory.
      value_type _M_instance[_Nm ? _Nm : 1];

      // No explicit construct/copy/destroy for aggregate type.

      void
      assign(const value_type&amp; __u)
      { std::fill_n(begin(), size(), __u); }

      void
      swap(array&amp; __other)
      { std::swap_ranges(begin(), end(), __other.begin()); }

      // Iterators.
      iterator
      begin()
      { return iterator(std::__addressof(_M_instance[0])); }

      const_iterator
      begin() const 
      { return const_iterator(std::__addressof(_M_instance[0])); }

      iterator
      end()
      { return iterator(std::__addressof(_M_instance[_Nm])); }

      const_iterator
      end() const
      { return const_iterator(std::__addressof(_M_instance[_Nm])); }

      reverse_iterator 
      rbegin()
      { return reverse_iterator(end()); }

      const_reverse_iterator 
      rbegin() const
      { return const_reverse_iterator(end()); }

      reverse_iterator 
      rend()
      { return reverse_iterator(begin()); }

      const_reverse_iterator 
      rend() const
      { return const_reverse_iterator(begin()); }

      // Capacity.
      size_type 
      size() const { return _Nm; }

      size_type 
      max_size() const { return _Nm; }

      bool 
      empty() const { return size() == 0; }

      // Element access.
      reference
      operator[](size_type __n)
      { return _M_instance[__n]; }

      const_reference
      operator[](size_type __n) const
      { return _M_instance[__n]; }

      reference
      at(size_type __n)
      {
	if (__n &gt;= _Nm)
	  std::__throw_out_of_range(__N(&quot;array::at&quot;));
	return _M_instance[__n];
      }

      const_reference
      at(size_type __n) const
      {
	if (__n &gt;= _Nm)
	  std::__throw_out_of_range(__N(&quot;array::at&quot;));
	return _M_instance[__n];
      }

      reference 
      front()
      { return *begin(); }

      const_reference 
      front() const
      { return *begin(); }

      reference 
      back()
      { return _Nm ? *(end() - 1) : *end(); }

      const_reference 
      back() const
      { return _Nm ? *(end() - 1) : *end(); }

      _Tp*
      data()
      { return std::__addressof(_M_instance[0]); }

      const _Tp*
      data() const
      { return std::__addressof(_M_instance[0]); }
    };

  // Array comparisons.
  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool 
    operator==(const array&lt;_Tp, _Nm&gt;&amp; __one, const array&lt;_Tp, _Nm&gt;&amp; __two)
    { return std::equal(__one.begin(), __one.end(), __two.begin()); }

  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool
    operator!=(const array&lt;_Tp, _Nm&gt;&amp; __one, const array&lt;_Tp, _Nm&gt;&amp; __two)
    { return !(__one == __two); }

  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool
    operator&lt;(const array&lt;_Tp, _Nm&gt;&amp; __a, const array&lt;_Tp, _Nm&gt;&amp; __b)
    { 
      return std::lexicographical_compare(__a.begin(), __a.end(),
					  __b.begin(), __b.end()); 
    }

  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool
    operator&gt;(const array&lt;_Tp, _Nm&gt;&amp; __one, const array&lt;_Tp, _Nm&gt;&amp; __two)
    { return __two &lt; __one; }

  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool
    operator&lt;=(const array&lt;_Tp, _Nm&gt;&amp; __one, const array&lt;_Tp, _Nm&gt;&amp; __two)
    { return !(__one &gt; __two); }

  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline bool
    operator&gt;=(const array&lt;_Tp, _Nm&gt;&amp; __one, const array&lt;_Tp, _Nm&gt;&amp; __two)
    { return !(__one &lt; __two); }

  // Specialized algorithms [6.2.2.2].
  template&lt;typename _Tp, std::size_t _Nm&gt;
    inline void
    swap(array&lt;_Tp, _Nm&gt;&amp; __one, array&lt;_Tp, _Nm&gt;&amp; __two)
    { __one.swap(__two); }

  // Tuple interface to class template array [6.2.2.5].

  /// tuple_size
  template&lt;typename _Tp&gt; 
    class tuple_size;

  /// tuple_element
  template&lt;int _Int, typename _Tp&gt;
    class tuple_element;

  template&lt;typename _Tp, std::size_t _Nm&gt;
    struct tuple_size&lt;array&lt;_Tp, _Nm&gt; &gt;
    { static const int value = _Nm; };

  template&lt;typename _Tp, std::size_t _Nm&gt;
    const int
    tuple_size&lt;array&lt;_Tp, _Nm&gt; &gt;::value;  

  template&lt;int _Int, typename _Tp, std::size_t _Nm&gt;
    struct tuple_element&lt;_Int, array&lt;_Tp, _Nm&gt; &gt;
    { typedef _Tp type; };

  template&lt;int _Int, typename _Tp, std::size_t _Nm&gt;
    inline _Tp&amp;
    get(array&lt;_Tp, _Nm&gt;&amp; __arr)
    { return __arr[_Int]; }

  template&lt;int _Int, typename _Tp, std::size_t _Nm&gt;
    inline const _Tp&amp;
    get(const array&lt;_Tp, _Nm&gt;&amp; __arr)
    { return __arr[_Int]; }
}

_GLIBCXX_END_NAMESPACE_VERSION
}

#endif // _GLIBCXX_TR1_ARRAY
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