Ds\Set::contains
(PECL ds >= 1.0.0)
Ds\Set::contains — Determines if the set contains all values
説明
public Ds\Set::contains
( mixed ...$values
) : bool
Determines if the set contains all values.
注意:
Values of type object are supported. If an object implements Ds\Hashable, equality will be determined by the object's
equalsfunction. If an object does not implement Ds\Hashable, objects must be references to the same instance to be considered equal.
警告 All comparisons are strict (type and value).
パラメータ
values- Values to check.
返り値
false if any of the provided values are not in the
set, true otherwise.
例
例1 Ds\Set::contains() example
<?php$set = new \Ds\Set([1, 2, 3]);var_dump($set->contains(1)); // truevar_dump($set->contains(1, 2)); // truevar_dump($set->contains(...[1, 2])); // truevar_dump($set->contains("1")); // falsevar_dump($set->contains(...[1, 2, 3, 4])); // falsevar_dump($set->contains(...[])); // true?>
上の例の出力は、 たとえば以下のようになります。
bool(true) bool(true) bool(true) bool(false) bool(false) bool(true)
