doc/src/snippets/code/doc_src_qt4-tulip.qdoc
author Alex Gilkes <alex.gilkes@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//! [0]
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foreach (variable, container)
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    statement;
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//! [0]
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//! [1]
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QList<QString> list;
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...
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foreach (QString str, list)
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    cout << str.ascii() << endl;
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//! [1]
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//! [2]
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QString str;
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foreach (str, list)
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    cout << str.ascii() << endl;
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//! [2]
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//! [3]
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// forward                                  // backward
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QList<QString> list;                        QList<QString> list;
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...                                         ...
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QListIterator<QString> i(list);             QListIterator<QString> i(list);        
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while (i.hasNext())                         i.toBack();                            
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    cout << i.next().ascii() << endl;       while (i.hasPrev())                    
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                                                cout << i.prev().ascii() << endl;
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//! [3]
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//! [4]
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// forward                                  // backward
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QMutableListIterator<int> i(list);          QMutableListIterator<int> i(list);  
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while (i.hasNext())                         i.toBack();                         
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    if (i.next() > 128)                     while (i.hasPrev())                 
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        i.setValue(128);                        if (i.prev() > 128)             
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                                                    i.setValue(128);           
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//! [4]
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//! [5]
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// forward                                  // backward
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QMutableListIterator<int> i(list);          QMutableListIterator<int> i(list);                 
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while (i.hasNext())                         i.toBack();                         
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    if (i.next() % 2 != 0)                  while (i.hasPrev())                        
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        i.remove();                             if (i.prev() % 2 != 0)          
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                                                    i.remove();                 
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//! [5]
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//! [6]
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// STL-style                                // Java-style
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QMap<int, QWidget *>::const_iterator i;     QMapIterator<int, QWidget *> i(map);
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for (i = map.begin(); i != map.end(); ++i)  while (i.findNext(widget))
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    if (i.value() == widget)                    cout << "Found widget " << widget
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        cout << "Found widget " << widget            << " under key "
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             << " under key "                        << i.key() << endl;
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             << i.key() << endl;
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//! [6]
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//! [7]
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// STL-style                                // Java-style
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QList<int>::iterator i = list.begin();      QMutableListIterator<int> i(list);
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while (i != list.end()) {                   while (i.hasNext()) {
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    if (*i == 0) {                              int val = i.next();
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        i = list.erase(i);                      if (val < 0)
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    } else {                                        i.setValue(-val);
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        if (*i < 0)                             else if (val == 0)
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            *i = -*i;                               i.remove();
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        ++i;                                }
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    }
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}
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//! [7]
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//! [8]
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QList<double> list;
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...
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for (int i = 0; i < list.size(); ++i) {
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    if (list[i] < 0.0)
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        list[i] = 0.0;
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}
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//! [8]
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//! [9]
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QMap<QString, int> map;
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...
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map.value("TIMEOUT", 30);  // returns 30 if "TIMEOUT" isn't in the map
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//! [9]
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//! [10]
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QMultiMap<QString, int> map;
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...
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QList<int> values = map.values("TIMEOUT");
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//! [10]