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Diffstat (limited to 'doc/src/snippets/code/doc_src_q3valuelist.cpp')
| -rw-r--r-- | doc/src/snippets/code/doc_src_q3valuelist.cpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/doc/src/snippets/code/doc_src_q3valuelist.cpp b/doc/src/snippets/code/doc_src_q3valuelist.cpp new file mode 100644 index 0000000..38ee9f6 --- /dev/null +++ b/doc/src/snippets/code/doc_src_q3valuelist.cpp @@ -0,0 +1,135 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +class Employee +{ +public: + Employee(): sn(0) {} + Employee( const QString& forename, const QString& surname, int salary ) + : fn(forename), sn(surname), sal(salary) + {} + + QString forename() const { return fn; } + QString surname() const { return sn; } + int salary() const { return sal; } + void setSalary( int salary ) { sal = salary; } + +private: + QString fn; + QString sn; + int sal; +}; + +typedef Q3ValueList<Employee> EmployeeList; +EmployeeList list; + +list.append( Employee("John", "Doe", 50000) ); +list.append( Employee("Jane", "Williams", 80000) ); +list.append( Employee("Tom", "Jones", 60000) ); + +Employee mary( "Mary", "Hawthorne", 90000 ); +list.append( mary ); +mary.setSalary( 100000 ); + +EmployeeList::iterator it; +for ( it = list.begin(); it != list.end(); ++it ) + cout << (*it).surname().latin1() << ", " << + (*it).forename().latin1() << " earns " << + (*it).salary() << endl; + +// Output: +// Doe, John earns 50000 +// Williams, Jane earns 80000 +// Hawthorne, Mary earns 90000 +// Jones, Tom earns 60000 +//! [0] + + +//! [1] +Q3ValueList<int> list; +list.append( 1 ); +list.append( 2 ); +list.append( 3 ); +... +if ( !list.empty() ) { + // OK, modify the first item + int& i = list.first(); + i = 18; +} +... +Q3ValueList<double> dlist; +double d = dlist.last(); // undefined +//! [1] + + +//! [2] +Q3ValueList<int> l; +... +Q3ValueList<int>::iterator it = l.end(); +--it; +if ( it != end() ) + // ... +//! [2] + + +//! [3] +Q3ValueList<int> l; +... +Q3ValueList<int>::iterator it = l.end(); +--it; +if ( it != end() ) + // ... +//! [3] + + +//! [4] +EmployeeList::iterator it; +for ( it = list.begin(); it != list.end(); ++it ) + cout << (*it).surname().latin1() << ", " << + (*it).forename().latin1() << " earns " << + (*it).salary() << endl; + +// Output: +// Doe, John earns 50000 +// Williams, Jane earns 80000 +// Hawthorne, Mary earns 90000 +// Jones, Tom earns 60000 +//! [4] |