學習NeXTSTEP（NS）基礎類-iOS應用程序的構建基塊。
When programming iOS apps it's important to get a grounding in at least a few of the most commonly used Objective-C NeXTSTEP (NS) foundation classes.
In this course, you get to take a look at the main classes for working with strings and arrays as well for formatting numbers and dates. You even get a look at the NSDictionary and NSMutableDictionary classes which allow you to both create AND return dictionaries of keys and values.
By the end of this course, you also get a chance to look at enumerating across collections with NSEnumerator as well as serializing NSCoding compliant classes using the NSKeyedArchiver class as well as serializing plists (property lists) using the NSPropertyListSerialization class.
Be sure watch all the courses in our growing iOS App Development series and continue to broaden your professional Apple iOS development toolkit!