Ds\Sequence::shift
(PECL ds >= 1.0.0)
Ds\Sequence::shift — Removes and returns the first value
参数
此函数没有参数。
返回值
The first value, which was removed.
错误／异常
UnderflowException if empty.
示例
示例 #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());
?>以上示例的输出类似于：
string(1) "a" string(1) "b" string(1) "c"
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