Ds\Deque::shift

Removes and returns the first value.

Description

public mixed Ds\Deque::shift ( void )

Removes and returns the first value.

Parameters

This function has no parameters.

Return Values

The first value, which was removed.

Errors/Exceptions

UnderflowException if empty.

Examples

Example #1 Ds\Deque::shift example

<?php
$deque 
= new \Ds\Deque(["a""b""c"]);

var_dump($deque->shift());
var_dump($deque->shift());
var_dump($deque->shift());
?>

The above example will output something similar to:

string(1) "a"
string(1) "b"
string(1) "c"