News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Fabien Potencier's Blog:
Iterator or IteratorAggregate?
June 25, 2010 @ 12:09:44

Following up on two previous posts about iterators, Fabien Potencier is back with one more quick shot on iterator aggregation - a look what using iterator versus iteratoraggregate.

If you have ever used iterators in your code, you have probably implemented the Iterator interface. Objects of a class that implements Iterator can be iterated over with the foreach loop. [...] The IteratorAggregate interface is quite similar [to Iterator] (both interfaces implement Traversable) but creates an external Iterator. But when the iterator is based on an array, creating an external Iterator for this array gives you a more concise and more readable code.

His example code shows how, in implementing and IteratorAggregate, you can grab the instance of the Iterator even if it's based on an array.

1 comment voice your opinion now!
iterator iteratoraggregate comparison traversable interface


blog comments powered by Disqus

Similar Posts

Harry Roberts' Blog: Flexible PHP Interfaces

PHPBuilder.com: PHP Object Remoting in Flex

Smarx.com: PHP for Microsoft AJAX Library

ProDevTips.com: Simple jQuery and PHP CRUD interface

Ben Ramsey's Blog: Supporting PUT & DELETE in the Zend Framework


Community Events

Don't see your event here?
Let us know!


introduction framework wordpress opinion series community language threedevsandamaybe library release unittest development laravel5 api interview voicesoftheelephpant laravel podcast extension feature

All content copyright, 2015 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework