C++/Qt/QMutableIterators
QMutableIterators to QList
<source lang="cpp"> /*
* Copyright (c) 2006-2007, Johan Thelin * * All rights reserved. * * 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 APress 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. * */
- include <QList>
- include <QString>
- include <QtDebug>
void fillAndPrint() {
QList<QString> list; list << "foo" << "bar" << "baz"; QString s; foreach( s, list ) qDebug() << s;
} void constIterators() {
QList<int> list; list << 23 << 27 << 52 << 52; QListIterator<int> javaIter( list ); while( javaIter.hasNext() ) qDebug() << javaIter.next(); QList<int>::const_iterator stlIter; for( stlIter = list.begin(); stlIter != list.end(); ++stlIter ) qDebug() << (*stlIter);
} void mutableIterators() {
QList<int> list; list << 27 << 33 << 61 << 62; QMutableListIterator<int> javaIter( list ); while( javaIter.hasNext() ) { int value = javaIter.next() + 1; javaIter.setValue( value ); qDebug() << value; } QList<int>::Iterator stlIter; for( stlIter = list.begin(); stlIter != list.end(); ++stlIter ) { (*stlIter) = (*stlIter)*2; qDebug() << (*stlIter); }
} void insertAndPrint() {
QList<QString> list; list << "first"; list.append( "second" ); list.prepend( "third" ); list.insert( 1, "fourth" ); list.insert( 4, "fifth" ); QString s; foreach( s, list ) qDebug() << s;
} void miscExamples() {
QList<int> list; for( int i=0; i<10; i++ ) list << i; int sum = list[5] + list.at(7);
} int main( void ) {
qDebug() << "Fill and print"; fillAndPrint(); qDebug() << "Const iterators"; constIterators(); qDebug() << "Mutable iterators"; mutableIterators(); qDebug() << "Insert and print"; insertAndPrint(); return 0;
}
</source>