Ds\Set::contains
(PECL ds >= 1.0.0)
Ds\Set::contains — Determines if the set contains all values
说明
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).
参数
values-
Values to check.
示例
示例 #1 Ds\Set::contains() example
<?php
$set = new \Ds\Set([1, 2, 3]);
var_dump($set->contains(1)); // true
var_dump($set->contains(1, 2)); // true
var_dump($set->contains(...[1, 2])); // true
var_dump($set->contains("1")); // false
var_dump($set->contains(...[1, 2, 3, 4])); // false
var_dump($set->contains(...[])); // true
?>以上示例的输出类似于：
bool(true) bool(true) bool(true) bool(false) bool(false) bool(true)
＋添加备注
用户贡献的备注
此页面尚无用户贡献的备注。