OrchardNest

An Objective-C class with dynamic storage. Describes how to create method implementations at runtime, using functions such as resolveInstanceMethod and class_addMethod.

How to ensure that a malformed network payload can never crash your app.

Implementing a trivial state machine in Swift.

Using the Objective-C runtime to read and write property values dynamically.

The @encode directive and how Objective-C encodes type details.

Using the Objective-C runtime to inspect properties of a class, and creating a convenience wrapper to work with them.

An introduction to the practical uses of the Objective-C runtime.