Learn how to build playgrounds so you can test your code, syntax, and ideas quickly. You can even learn from playgrounds built by others or build playgrounds to teach. And the playgrounds you build and use on your Mac and on your iPad are automatically shared using your Apple ID. Exploring Swift Playgrounds shows you how to use playgrounds to try out your basic app design ideas to see what they look like and how they behave. It doesn't matter if you can't remember a pesky li