February 21, 2014 File System Cont by Robert Van Slooten Explains how to store a NSArray as a property list in a file located in the Documents directory.
February 20, 2014 File System Intro by Robert Van Slooten Explores the UNIX directories available to an iOS app and how to determine their paths. It also introduces the file system’s management classes.
February 15, 2014 Basic Data Persistence by Robert Van Slooten Uses the AppDelegate to manage the Slider app's data model and the NSUserDefaults class to store an NSNumber object.