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extern/stdcxx/4.2.1/examples/manual/insert_iterator.cpp

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+/**************************************************************************
+ *
+ * ins_itr.cpp - Example program of insert iterator. 
+ *
+ * $Id: insert_iterator.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <algorithm>   // for copy
+#include <iostream>    // for cout, endl
+#include <iterator>    // for ostream_iterator, xxx_inserter
+#include <deque>       // for deque
+
+#include <examples.h>
+
+
+int main ()
+{
+    // Typedefs for convenience.
+    typedef std::deque<int, std::allocator<int> >                     Deque;
+    typedef std::ostream_iterator<int, char, std::char_traits<char> > os_iter;
+
+    // Initialize a deque using an array.
+    Deque::value_type arr[] = { 3, 4, 7, 8 };
+    Deque d (arr, arr + sizeof arr / sizeof *arr);
+
+    // Output the original deque.
+    std::cout << "Start with a deque: \n     ";
+    std::copy (d.begin (), d.end (), os_iter (std::cout, " "));
+
+    // Insert into the middle.
+    std::insert_iterator<Deque> ins (d, d.begin () + 2);
+    *ins = 5;
+    *ins = 6;
+
+    // Output the new deque.
+    std::cout << "\n\nUse an insert_iterator: \n     ";
+    std::copy (d.begin (), d.end (), os_iter (std::cout, " "));
+
+    // A deque of four 1s.
+    Deque d2 (4, 1);
+
+    // Insert d2 at front of d.
+    std::copy (d2.begin (), d2.end (), std::front_inserter (d));
+
+    // Output the new deque.
+    std::cout << "\n\nUse a front_inserter: \n     ";
+    std::copy (d.begin (), d.end (), os_iter (std::cout, " "));
+
+    // Insert d2 at back of d.
+    std::copy (d2.begin (), d2.end (), std::back_inserter (d));
+
+    // Output the new deque.
+    std::cout << "\n\nUse a back_inserter: \n     ";
+    std::copy (d.begin (), d.end (), os_iter (std::cout, " "));
+
+    std::cout << std::endl;
+   
+    return 0;
+}