Where To Go From Here
In this article you’ve learned about several new features of Objective-C and its associated frameworks. You should always aim to stay up-to-date with advances in both the language and core system frameworks such as Foundation. If you do so, then you’ll be able to make use of the latest and greatest offerings from Apple.
Go forth and make your apps compiler faster using modules. Make them more resilient to awkward bugs arising from umbrella id return types by using instancetype instead. And finally, start using all the fun new methods and classes found in Foundation!
If you’d like to learn more about What’s New with Objective-C and Foundation (or more about iOS 7 in general), check out our new book iOS 7 by Tutorials. The book contains more info and examples of NSProgress along with tons of other chapters on almost everything else in iOS 7.
In the meantime, if you have any questions or comments, please join the forum discussion below!
