Ds\Sequence::apply

(PECL ds >= 1.0.0)

Ds\Sequence::applyUpdates all values by applying a callback function to each value

说明

abstract public void Ds\Sequence::apply ( callable $callback )

Updates all values by applying a callback function to each value in the sequence.

参数

callback

mixed callback ( mixed $value )

A callable to apply to each value in the sequence.

The callback should return what the value should be replaced by.

返回值

没有返回值。

范例

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

<?php
$sequence 
= new \Ds\Sequence([123]);
$sequence->apply(function($value) { return $value 2; });

print_r($sequence);
?>

以上例程的输出类似于:

Ds\Vector Object
(
    [0] => 2
    [1] => 4
    [2] => 6
)
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