Cocoa uses property lists (also called plists, after the common extension for property-list files) everywhere. They are the all-purpose storage medium for structured data, both for application resources and even application documents. Though I’ve put this chapter into the OS X section of this book, property lists are important to iOS developers, as well.
• Many of Apple’s standard formats for configuration files are simply specifications of keys and trees for property lists. If you want a configuration file of your own, you could do much worse than a specialized plist file.
• In particular, applications on iOS and OS X alike include an
Info.plist file that tells the system how the app is to be presented and what kinds of data ...