QQueue Class Reference

The QQueue class is a template class that provides a queue. More...

#include <qqueue.h>

Inherits QGList.

List of all member functions.

Public Members

• QQueue () 
• QQueue ( const QQueue<type> & queue ) 
• ~QQueue () 
• QQueue<type>& operator= ( const QQueue<type> & queue ) 
• bool autoDelete () const
• void setAutoDelete ( bool enable ) 
• virtual uint count () const
• bool isEmpty () const
• void enqueue ( const type * d ) 
• type* dequeue () 
• bool remove () 
• virtual void clear () 
• type* head () const
• operator type* ()const
• type* current () const

Detailed Description

QQueue is implemented as a template class. Define a template instance QQueue<X> to create a queue that operates on pointers to X, or X*.

A queue is a First In, First Out (FIFO) structure. Items are added to the back of the queue with enqueue() and retrieved from the front with dequeue().

See also: Collection Classes

Member Function Documentation

QQueue::QQueue ()

Creates an empty queue.

QQueue::QQueue ( const QQueue<type> & queue )

Creates a queue from another.

Only the pointers are copied (shallow copy).

QQueue::~QQueue ()

Destroys the list. Items in the list are destroyed if autoDelete() is TRUE.

QQueue::operator type* () const

Returns a reference to the front item in the queue. The queue is not changed.

type* QQueue::current () const

Returns a reference to the front item in the queue. The queue is not changed.

type* QQueue::dequeue ()

Takes the front item from the queue. First in, first out.

void QQueue::enqueue ( const type * d )

Adds an item to the back of the queue. First in, first out.

type* QQueue::head () const

Returns a reference to the front item in the queue. The queue is not changed.

bool QQueue::isEmpty () const

Returns TRUE if there are no items to be dequeued

QQueue<type>& QQueue::operator= ( const QQueue<type> & queue )

Assigns queue to this queue and returns a reference to this queue.

This queue is first cleared, then each item in queue is enqueued to this queue. Only the pointers are copied (shallow copy).

bool QQueue::remove ()

Removes the front item from the queue. First in, first out. The item is deleted if autoDelete() is TRUE. Returns TRUE if there was an item to remove.

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