Ds\Deque::isEmpty
(PECL ds >= 1.0.0)
Ds\Deque::isEmpty — Returns whether the deque is empty
Description
public Ds\Deque::isEmpty ( ) : bool
Returns whether the deque is empty.
Parameters
This function has no parameters.
Return Values
Returns true if the deque is empty, false otherwise.
Examples
Example #1 Ds\Deque::isEmpty() example
<?php $a = new \Ds\Deque([1, 2, 3]); $b = new \Ds\Deque(); var_dump($a->isEmpty()); var_dump($b->isEmpty()); ?>
The above example will output something similar to:
bool(false) bool(true)
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https://www.php.net/manual/en/ds-deque.isempty.php