iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
JSON
JavaScript Object Notation (JSON) is a lightweight format for sharing data. It is technically a part of the language JavaScript and provides a way to serialize JavaScript objects; however, practically, it is supported in a wide variety of programming languages, making it a great candidate for sharing data between different platforms. JSON also has the benefit of being human-readable.
JSON has a simple and intuitive syntax. At its most basic level, a JSON document can contain “objects,” which are essentially key-value dictionaries like Objective-C programmers are familiar with, or arrays. JSON can contain arrays of objects and arrays of values, and can nest arrays and objects. Values stored in JSON, either in arrays or associated with a ...
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