QValueStack - Value based template class that provides a
       stack

       #include <qvaluestack.h>

       Inherits QValueList.

   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 which all have the class X. Please notice
       that QValueStack does not store pointers to the members of
       the stack. It holds a copy of every member. That is the
       reason why this kind of classes are called "value based"
       while QStack, QList and QDict are "reference 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(). Furthermore, top()
       provides access to the topmost item without removing it.

       Example:

           #include <qvaluestack.h>
           #include <stdio.h>
           void main()
           {
               QValueStack<int> stack;
               stack.push( 1 );
               stack.push( 2 );
               stack.push( 3 );
               while ( !stack.isEmpty() )
                       printf("pop item %d\n", stack.pop() );
         }

       Program output:

               pop item 3;
               pop item 2;
               pop item 1;

       Technically, QValueStack is a specialized QValueList

       functionality applies also to QStack, for example the
       facility to iterate over all elements using
       QValueStack<T>::Iterator. See QValueListIterator for
       further details.

       Some classes can not 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 and

       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.


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. Since
       QValueStack is highly tuned for performance you wont see
       warnings if you use invalid iterators, because it is
       impossible for an iterator to check wether it is valid or
       not.


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 an element 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. Please
       note that you may not change the value the end() Iterator
       is pointing to.


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


const T& QValueStack::top () const

       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 1992-2001 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
       make our job much simpler. Thank you.

       In case of content or formattting problems with 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 (2.3.1).


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