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RedHat 9 (Linux i386) - man page for qdictiterator (redhat section 3qt)

QDictIterator(3qt)							       QDictIterator(3qt)

NAME
       QDictIterator - Iterator for QDict collections

SYNOPSIS
       #include <qdict.h>

   Public Members
       QDictIterator ( const QDict<type> & dict )
       ~QDictIterator ()
       uint count () const
       bool isEmpty () const
       type * toFirst ()
       operator type * () const
       type * current () const
       QString currentKey () const
       type * operator() ()
       type * operator++ ()

DESCRIPTION
       The QDictIterator class provides an iterator for QDict collections.

       QDictIterator is implemented as a template class. Define a template instance
       QDictIterator<X> to create a dictionary iterator that operates on QDict<X> (dictionary of
       X*).

       The traversal order is arbitrary; when we speak of the "first"," last" and "next" item we
       are talking in terms of this arbitrary order.

       Multiple iterators may independently traverse the same dictionary. A QDict knows about all
       the iterators that are operating on the dictionary. When an item is removed from the
       dictionary, QDict updates all iterators that are referring to the removed item to point to
       the next item in the (arbitrary) traversal order.

       Example:

	   QDict<QLineEdit> fields;
	   fields.insert( "forename", new QLineEdit( this ) );
	   fields.insert( "surname", new QLineEdit( this ) );
	   fields.insert( "age", new QLineEdit( this ) );
	   fields["forename"]->setText( "Homer" );
	   fields["surname"]->setText( "Simpson" );
	   fields["age"]->setText( "45" );
	   QDictIterator<QLineEdit> it( fields );
	   for( ; it.current(); ++it )
	       cout << it.currentKey() << ": " << it.current()->text() << endl;
	   cout << endl;
	   // Output (random order):
	   //  age: 45
	   //  surname: Simpson
	   //  forename: Homer
       In the example we insert some pointers to line edits into a dictionary, then iterate over
       the dictionary printing the strings associated with the line edits.

       See also QDict, Collection Classes, and Non-GUI Classes.

MEMBER FUNCTION DOCUMENTATION
QDictIterator::QDictIterator ( const QDict<type> & dict )
       Constructs an iterator for dict. The current iterator item is set to point to the first
       item in the dictionary, dict. First in this context means first in the arbitrary traversal
       order.

QDictIterator::~QDictIterator ()
       Destroys the iterator.

uint QDictIterator::count () const
       Returns the number of items in the dictionary over which the iterator is operating.

       See also isEmpty().

type * QDictIterator::current () const
       Returns a pointer to the current iterator item's value.

QString QDictIterator::currentKey () const
       Returns the current iterator item's key.

bool QDictIterator::isEmpty () const
       Returns TRUE if the dictionary is empty, i.e. count() == 0; otherwise returns FALSE.

       See also count().

QDictIterator::operator type * () const
       Cast operator. Returns a pointer to the current iterator item. Same as current().

type * QDictIterator::operator() ()
       Makes the next item current and returns the original current item.

       If the current iterator item was the last item in the dictionary or if it was 0, 0 is
       returned.

type * QDictIterator::operator++ ()
       Prefix ++ makes the next item current and returns the new current item.

       If the current iterator item was the last item in the dictionary or if it was 0, 0 is
       returned.

type * QDictIterator::toFirst ()
       Resets the iterator, making the first item the first current item. First in this context
       means first in the arbitrary traversal order. Returns a pointer to this item.

       If the dictionary is empty it sets the current item to 0 and returns 0.

SEE ALSO
       http://doc.trolltech.com/qdictiterator.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qdictiterator.3qt) and the Qt version (3.1.1).

Trolltech AS				 9 December 2002		       QDictIterator(3qt)


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