Queue (class)

The Queue class

Introduction

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A Queue is a “first in, first out” or “FIFO” collection that only allows access to the value at the front of the queue and iterates in that order, destructively.

Class synopsis

public void allocate ( int $capacity )

public int capacity ( void )

public void clear ( void )

public Ds\Queue copy ( void )

public bool isEmpty ( void )

public mixed peek ( void )

public mixed pop ( void )

public void push ([ mixed $...values ] )

public array toArray ( void )

Predefined Constants

Ds\Queue::MIN_CAPACITY

Table of Contents

• Ds\Queue::allocate — Allocates enough memory for a required capacity.
• Ds\Queue::capacity — Returns the current capacity.
• Ds\Queue::clear — Removes all values.
• Ds\Queue::__construct — Creates a new instance.
• Ds\Queue::copy — Returns a shallow copy of the queue.
• Ds\Queue::count — Returns the number of values in the queue.
• Ds\Queue::isEmpty — Returns whether the queue is empty
• Ds\Queue::jsonSerialize — Returns a representation that can be converted to JSON.
• Ds\Queue::peek — Returns the value at the front of the queue.
• Ds\Queue::pop — Removes and returns the value at the front of the queue.
• Ds\Queue::push — Pushes values into the queue.
• Ds\Queue::toArray — Converts the queue to an array.