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An array is an object that contains collections of other objects. Array objects in Objective-C are handled using Foundation Framework NSArray class. The NSArray class contains a number of methods specifically designed to ease the creation and manipulation of arrays within Objective-C programs. Unlike some object oriented programing languages (C# being one example), the objects contained in an array do not all have to be of the same type.
In this chapter, we will cover some of the basics of working with array objects in Objective-C. Many more class and instance methods are provided by the array classes than can be covered here so refer to the Foundation Framework documentation for a full listing of capabilities.
== Mutable and Immutable Arrays ==