1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the documentation of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 //! [0]

    43 QSet<QString> set;

    44 //! [0]

    45 

    46 

    47 //! [1]

    48 set.insert("one");

    49 set.insert("three");

    50 set.insert("seven");

    51 //! [1]

    52 

    53 

    54 //! [2]

    55 set << "twelve" << "fifteen" << "nineteen";

    56 //! [2]

    57 

    58 

    59 //! [3]

    60 if (!set.contains("ninety-nine"))

    61     ...

    62 //! [3]

    63 

    64 

    65 //! [4]

    66 QSetIterator<QWidget *> i(set);

    67 while (i.hasNext())

    68     qDebug() << i.next();

    69 //! [4]

    70 

    71 

    72 //! [5]

    73 QSet<QWidget *>::const_iterator i = set.constBegin();

    74 while (i != set.constEnd()) {

    75     qDebug() << *i;

    76     ++i;

    77 }

    78 //! [5]

    79 

    80 

    81 //! [6]

    82 QSet<QString> set;

    83 ...

    84 foreach (QString value, set)

    85     qDebug() << value;

    86 //! [6]

    87 

    88 

    89 //! [7]

    90 QSet<QString> set;

    91 set.reserve(20000);

    92 for (int i = 0; i < 20000; ++i)

    93     set.insert(values[i]);

    94 //! [7]

    95 

    96 

    97 //! [8]

    98 QSet<QString> set;

    99 set << "January" << "February" << ... << "December";

   100 

   101 QSet<QString>::iterator i;

   102 for (i = set.begin(); i != set.end(); ++i)

   103     qDebug() << *i;

   104 //! [8]

   105 

   106 

   107 //! [9]

   108 QSet<QString> set;

   109 set << "January" << "February" << ... << "December";

   110 

   111 QSet<QString>::iterator i = set.begin();

   112 while (i != set.end()) {

   113     if ((*i).startsWith('J')) {

   114         i = set.erase(i);

   115     } else {

   116         ++i;

   117     }

   118 }

   119 //! [9]

   120 

   121 

   122 //! [10]

   123 QSet<QString> set;

   124 ...

   125 QSet<QString>::iterator it = qFind(set.begin(), set.end(), "Jeanette");

   126 if (it != set.end())

   127     cout << "Found Jeanette" << endl;

   128 //! [10]

   129 

   130 

   131 //! [11]

   132 QSet<QString> set;

   133 set << "January" << "February" << ... << "December";

   134 

   135 QSet<QString>::const_iterator i;

   136 for (i = set.begin(); i != set.end(); ++i)

   137     qDebug() << *i;

   138 //! [11]

   139 

   140 

   141 //! [12]

   142 QSet<QString> set;

   143 ...

   144 QSet<QString>::iterator it = qFind(set.begin(), set.end(), "Jeanette");

   145 if (it != set.constEnd())

   146     cout << "Found Jeanette" << endl;

   147 //! [12]

   148 

   149 

   150 //! [13]

   151 QSet<QString> set;

   152 set << "red" << "green" << "blue" << ... << "black";

   153 

   154 QList<QString> list = set.toList();

   155 qSort(list);

   156 //! [13]

   157 

   158 

   159 //! [14]

   160 QStringList list;

   161 list << "Julia" << "Mike" << "Mike" << "Julia" << "Julia";

   162 

   163 QSet<QString> set = QSet<QString>::fromList(list);

   164 set.contains("Julia");  // returns true

   165 set.contains("Mike");   // returns true

   166 set.size();             // returns 2

   167 //! [14]