Objective-C Recipes: A Problem-Solution Approach

Chapter    ³

Working with Object Collections

This chapter will help you work with arrays and dictionaries using the Foundation framework with Objective-C.

The recipes in this chapter will show you how to:

• Create arrays using NSArray and NSMutableArray
• Add, remove, and insert objects into arrays
• Search and sort arrays
• Use different procedures to iterate through arrays
• Save array contents to the file system
• Create dictionaries using NSDictionary and NSMutableDictionary
• Add and remove objects from dictionaries
• Use different procedures to iterate through dictionaries
• Save dictionary contents to the file system
• Create sets using NSSet and NSMutableSet
• Compare sets based on their object contents
• Use different procedures to iterate through sets