Subversion Repositories openrisc

// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009 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.

// You should have received a copy of the GNU General Public License

// along with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software

// is hereby granted without fee, provided that the above copyright

// notice appears in all copies, and that both that copyright notice

// and this permission notice appear in supporting documentation. None

// of the above authors, nor IBM Haifa Research Laboratories, make any

// representation about the suitability of this software for any

// purpose. It is provided "as is" without express or implied

// warranty.

/**

 * @file basic_map_example.cpp

 * A basic example showing how to use maps.

 */

/**

 * This example shows how to use "maps". It defines a

 * function performing a sequence of operations on

 * a generic container. It then calls this function with some containers.

 */

#include <iostream>

#include <cassert>

#include <ext/pb_ds/assoc_container.hpp>

using namespace std;

using namespace __gnu_pbds;

// The following function performs a sequence of operations on an

// associative container object mapping integers to characters.

template<class Cntnr>

void

some_op_sequence(Cntnr& r_c)

{

  assert(r_c.empty());

  assert(r_c.size() == 0);

  r_c.insert(make_pair(1, 'a'));

  r_c[2] = 'b';

  assert(!r_c.empty());

  assert(r_c.size() == 2);

  cout << "Key 1 is mapped to " << r_c[1] << endl;

  cout << "Key 2 is mapped to " << r_c[2] << endl;

  cout << endl << "All value types in the container:" << endl;

  typedef typename Cntnr::const_iterator const_iterator;

  for (const_iterator it = r_c.begin(); it != r_c.end(); ++it)

    cout << it->first << " -> " << it->second << endl;

  cout << endl;

  r_c.clear();

  assert(r_c.empty());

  assert(r_c.size() == 0);

}

int main()

{

  {

    // Perform operations on a collision-chaining hash map.

    cc_hash_table<int, char> c;

    some_op_sequence(c);

  }

  {

    // Perform operations on a general-probing hash map.

    gp_hash_table<int, char> c;

    some_op_sequence(c);

  }

  {

    // Perform operations on a red-black tree map.

    tree<int, char> c;

    some_op_sequence(c);

  }

  {

    // Perform operations on a splay tree map.

    tree<int, char, less<int>, splay_tree_tag> c;

    some_op_sequence(c);

  }

  {

    // Perform operations on an ov tree map.

    tree<int, char, less<int>, ov_tree_tag> c;

    some_op_sequence(c);

  }

  {

    // Perform operations on a list-update map.

    list_update<int, char> c;

    some_op_sequence(c);

  }

}