Ds\Sequence::apply
(PECL ds >= 1.0.0)
Ds\Sequence::apply — Updates all values by applying a callback function to each value
説明
Updates all values by applying a callback
function to
each value in the sequence.
パラメータ
callback
-
A callable to apply to each value in the sequence.
The callback should return what the value should be replaced by.
戻り値
値を返しません。
例
例1 Ds\Sequence::apply() example
<?php
$sequence = new \Ds\Vector([1, 2, 3]);
$sequence->apply(function($value) { return $value * 2; });
print_r($sequence);
?>
上の例の出力は、 たとえば以下のようになります。
Ds\Vector Object ( [0] => 2 [1] => 4 [2] => 6 )
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