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 class Employee

    44 {

    45 public:

    46     Employee() {}

    47     Employee(const Employee &other);

    48 

    49     Employee &operator=(const Employee &other);

    50 

    51 private:

    52     QString myName;

    53     QDate myDateOfBirth;

    54 };

    55 //! [0]

    56 

    57 

    58 //! [1]

    59 QList<QString> list;

    60 list << "A" << "B" << "C" << "D";

    61 

    62 QListIterator<QString> i(list);

    63 while (i.hasNext())

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

    65 //! [1]

    66 

    67 

    68 //! [2]

    69 QListIterator<QString> i(list);

    70 i.toBack();

    71 while (i.hasPrevious())

    72     qDebug() << i.previous();

    73 //! [2]

    74 

    75 

    76 //! [3]

    77 QMutableListIterator<int> i(list);

    78 while (i.hasNext()) {

    79     if (i.next() % 2 != 0)

    80         i.remove();

    81 }

    82 //! [3]

    83 

    84 

    85 //! [4]

    86 QMutableListIterator<int> i(list);

    87 i.toBack();

    88 while (i.hasPrevious()) {

    89     if (i.previous() % 2 != 0)

    90         i.remove();

    91 }

    92 //! [4]

    93 

    94 

    95 //! [5]

    96 QMutableListIterator<int> i(list);

    97 while (i.hasNext()) {

    98     if (i.next() > 128)

    99         i.setValue(128);

   100 }

   101 //! [5]

   102 

   103 

   104 //! [6]

   105 QMutableListIterator<int> i(list);

   106 while (i.hasNext())

   107     i.next() *= 2;

   108 //! [6]

   109 

   110 

   111 //! [7]

   112 QMap<QString, QString> map;

   113 map.insert("Paris", "France");

   114 map.insert("Guatemala City", "Guatemala");

   115 map.insert("Mexico City", "Mexico");

   116 map.insert("Moscow", "Russia");

   117 ...

   118 

   119 QMutableMapIterator<QString, QString> i(map);

   120 while (i.hasNext()) {

   121     if (i.next().key().endsWith("City"))

   122         i.remove();

   123 }

   124 //! [7]

   125 

   126 

   127 //! [8]

   128 QMap<int, QWidget *> map;

   129 QHash<int, QWidget *> hash;

   130 

   131 QMapIterator<int, QWidget *> i(map);

   132 while (i.hasNext()) {

   133     i.next();

   134     hash.insert(i.key(), i.value());

   135 }

   136 //! [8]

   137 

   138 

   139 //! [9]

   140 QMutableMapIterator<int, QWidget *> i(map);

   141 while (i.findNext(widget))

   142     i.remove();

   143 //! [9]

   144 

   145 

   146 //! [10]

   147 QList<QString> list;

   148 list << "A" << "B" << "C" << "D";

   149 

   150 QList<QString>::iterator i;

   151 for (i = list.begin(); i != list.end(); ++i)

   152     *i = (*i).toLower();

   153 //! [10]

   154 

   155 

   156 //! [11]

   157 QList<QString> list;

   158 list << "A" << "B" << "C" << "D";

   159 

   160 QList<QString>::iterator i = list.end();

   161 while (i != list.begin()) {

   162     --i;

   163     *i = (*i).toLower();

   164 }

   165 //! [11]

   166 

   167 

   168 //! [12]

   169 QList<QString>::const_iterator i;

   170 for (i = list.constBegin(); i != list.constEnd(); ++i)

   171     qDebug() << *i;

   172 //! [12]

   173 

   174 

   175 //! [13]

   176 QMap<int, int> map;

   177 ...

   178 QMap<int, int>::const_iterator i;

   179 for (i = map.constBegin(); i != map.constEnd(); ++i)

   180     qDebug() << i.key() << ":" << i.value();

   181 //! [13]

   182 

   183 

   184 //! [14]

   185 // RIGHT

   186 const QList<int> sizes = splitter->sizes();

   187 QList<int>::const_iterator i;

   188 for (i = sizes.begin(); i != sizes.end(); ++i)

   189     ...

   190 

   191 // WRONG

   192 QList<int>::const_iterator i;

   193 for (i = splitter->sizes().begin();

   194         i != splitter->sizes().end(); ++i)

   195     ...

   196 //! [14]

   197 

   198 

   199 //! [15]

   200 QLinkedList<QString> list;

   201 ...

   202 QString str;

   203 foreach (str, list)

   204     qDebug() << str;

   205 //! [15]

   206 

   207 

   208 //! [16]

   209 QLinkedList<QString> list;

   210 ...

   211 QLinkedListIterator<QString> i(list);

   212 while (i.hasNext())

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

   214 //! [16]

   215 

   216 

   217 //! [17]

   218 QLinkedList<QString> list;

   219 ...

   220 foreach (QString str, list)

   221     qDebug() << str;

   222 //! [17]

   223 

   224 

   225 //! [18]

   226 QLinkedList<QString> list;

   227 ...

   228 foreach (QString str, list) {

   229     if (str.isEmpty())

   230         break;

   231     qDebug() << str;

   232 }

   233 //! [18]

   234 

   235 

   236 //! [19]

   237 QMap<QString, int> map;

   238 ...

   239 foreach (QString str, map.keys())

   240     qDebug() << str << ":" << map.value(str);

   241 //! [19]

   242 

   243 

   244 //! [20]

   245 QMultiMap<QString, int> map;

   246 ...

   247 foreach (QString str, map.uniqueKeys()) {

   248     foreach (int i, map.values(str))

   249         qDebug() << str << ":" << i;

   250 }

   251 //! [20]

   252 

   253 

   254 //! [21]

   255 forever {

   256     ...

   257 }

   258 //! [21]

   259 

   260 

   261 //! [22]

   262 CONFIG += no_keywords

   263 //! [22]

   264 

   265 

   266 //! [23]

   267 QString onlyLetters(const QString &in)

   268 {

   269     QString out;

   270     for (int j = 0; j < in.size(); ++j) {

   271         if (in[j].isLetter())

   272             out += in[j];

   273     }

   274     return out;

   275 }

   276 //! [23]