Ds\PriorityQueue::isEmpty

(PECL ds >= 1.0.0)

Ds\PriorityQueue::isEmpty — Returns whether the queue is empty

Description

public function Ds\PriorityQueue::isEmpty(): bool

Returns whether the queue is empty.

Parameters

This function has no parameters.

Return Values

Returns true if the queue is empty, false otherwise.

Examples

Example #1 Ds\PriorityQueue::isEmpty() example

<?php
$a = new \Ds\PriorityQueue();
$b = new \Ds\PriorityQueue();

$a->push("a",  5);
$a->push("b", 15);
$a->push("c", 10);

var_dump($a->isEmpty());
var_dump($b->isEmpty());
?>

The above example will output something similar to:

bool(false)
bool(true)