Ds\Sequence::shift

(PECL ds >= 1.0.0)

Ds\Sequence::shift — Removes and returns the first value

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abstract public Ds\Sequence::shift ( void ) : mixed

Removes and returns the first value.

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The first value, which was removed.

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UnderflowException if empty.

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Example #1 Ds\Sequence::shift() example

<?php
$sequence = new \Ds\Vector(["a", "b", "c"]);

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

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