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QValueStack(3qt)					      QValueStack(3qt)

NAME
       QValueStack - Value-based template class that provides a stack

SYNOPSIS
       All the functions in this class are reentrant when Qt is built with
       thread support.</p>

       #include <qvaluestack.h>

       Inherits QValueList<T>.

   Public Members
       QValueStack ()
       ~QValueStack ()
       void push ( const T & d )
       T pop ()
       T & top ()
       const T & top () const

DESCRIPTION
       The QValueStack class is a value-based template class that provides a
       stack.

       Define a template instance QValueStack<X> to create a stack of values
       that all have the class X. QValueStack is part of the Qt Template
       Library.

       Note that QValueStack does not store pointers to the members of the
       stack; it holds a copy of every member. That is why these kinds of
       classes are called "value based"; QPtrStack, QPtrList, QDict, etc., are
       "pointer based".

       A stack is a last in, first out (LIFO) structure. Items are added to
       the top of the stack with push() and retrieved from the top with pop().
       The top() function provides access to the topmost item without removing
       it.

       Example:

	       QValueStack<int> stack;
	       stack.push( 1 );
	       stack.push( 2 );
	       stack.push( 3 );
	       while ( ! stack.isEmpty() )
		   cout << "Item: " << stack.pop() << endl;
	       // Output:
	       //      Item: 3
	       //      Item: 2
	       //      Item: 1

       QValueStack is a specialized QValueList provided for convenience. All
       of QValueList's functionality also applies to QPtrStack, for example
       the facility to iterate over all elements using
       QValueStack<T>::Iterator. See QValueListIterator for further details.

       Some classes cannot be used within a QValueStack, for example
       everything derived from QObject and thus all classes that implement
       widgets. Only values can be used in a QValueStack. To qualify as a
       value, the class must provide

       a copy constructor;

       an assignment operator;

       a default constructor, i.e. a constructor that does not take any
       arguments.

       Note that C++ defaults to field-by-field assignment operators and copy
       constructors if no explicit version is supplied. In many cases this is
       sufficient.

       See also Qt Template Library Classes, Implicitly and Explicitly Shared
       Classes, and Non-GUI Classes.

MEMBER FUNCTION DOCUMENTATION
QValueStack::QValueStack ()
       Constructs an empty stack.

QValueStack::~QValueStack ()
       Destroys the stack. References to the values in the stack and all
       iterators of this stack become invalidated. Because QValueStack is
       highly tuned for performance, you won't see warnings if you use invalid
       iterators because it is impossible for an iterator to check whether or
       not it is valid.

T QValueStack::pop ()
       Removes the top item from the stack and returns it.

       See also top() and push().

void QValueStack::push ( const T & d )
       Adds element, d, to the top of the stack. Last in, first out.

       This function is equivalent to append().

       See also pop() and top().

T & QValueStack::top ()
       Returns a reference to the top item of the stack or the item referenced
       by end() if no such item exists. Note that you must not change the
       value the end() iterator points to.

       This function is equivalent to last().

       See also pop(), push(), and QValueList::fromLast().

const T & QValueStack::top () const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns a reference to the top item of the stack or the item referenced
       by end() if no such item exists.

       This function is equivalent to last().

       See also pop(), push(), and QValueList::fromLast().

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

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, 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
       (qvaluestack.3qt) and the Qt version (3.3.8).

Trolltech AS			2 February 2007		      QValueStack(3qt)
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