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Ds\Deque::first

(PECL ds >= 1.0.0)

Ds\Deque::firstReturns the first value in the deque.

Description

public mixed Ds\Deque::first ( void )

Returns the first value in the deque.

Parameters

This function has no parameters.

Return Values

The first value in the deque.

Errors/Exceptions

UnderflowException if empty.

Examples

Example #1 Ds\Deque::first() example

<?php
$deque 
= new \Ds\Deque([123]);
var_dump($deque->first());
?>

The above example will output something similar to:

int(1)
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