Ds\Set::contains
PHP function
Edit on GitHub ✎
(PECL ds >= 1.0.0)
Determines if the set contains all values
Description
Ds\Set::contains(mixed ...$values): bool
Determines if the set contains all values.
Note
Values of type object are supported. If an object implements Ds\Hashable, equality will be determined by the object's equals function. If an object does not implement Ds\Hashable, objects must be references to the same instance to be considered equal.
Caution
All comparisons are strict (type and value).
Parameters
valuesValues to check.
Return Values
false if any of the provided values are not in the set, true otherwise.
Examples
Ds\Set::contains() example
php
<?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
?>The above example will output something similar to:
output
bool(true)
bool(true)
bool(true)
bool(false)
bool(false)
bool(true)