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<?php
namespace Bdf\Collection\Util\Functor\Predicate;
/**
* Check if the element is an instance of the given class name
*
* <code>
* $stream
* ->filter(new IsInstanceOf(User::class)
* ->forEach(function (User $user) { ... })
* ;
* </code>
*/
final class IsInstanceOf implements PredicateInterface
{
* @var string
private $className;
* IsInstanceOf constructor.
* @param string $className The class name
public function __construct(string $className)
$this->className = $className;
}
* {@inheritdoc}
public function __invoke($element, $key = null): bool
return $element instanceof $this->className;
b2pweb /
bdf-collections
