Chapter    21

Frame Up

Now that you’ve got these mad Swift skills, let’s put some of them to use. This final chapter is going to wade a little into the deep end of iOS development. You’ll develop an extension—an exciting new feature of iOS 8—and to do that you’ll create a framework.

A framework is a self-contained bundle of code, resources, and interfaces. A framework can contain compiled code (classes and functions), resources (images, sounds, storyboards), and an API (the list of classes, properties, and functions you’re allowed to use). In short, it contains everything you need to use a collection of code that someone else has written. If you’ve used DLLs or static libraries on other platforms, or possibly Java .jar files, you have the general ...

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