Gain low-level access to the Objective-C runtime and the Objective-C root types.
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The Objective-C Runtime module APIs define the base of the Objective-C language. These APIs include:
Types such as the
NSObject class and the
NSObjectProtocol protocol that provide the root functionality of most Objective-C classes
Functions and data structures that comprise the Objective-C runtime, which provides support for the dynamic properties of the Objective-C language
You typically don't need to use this module directly.
The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.
Describes the macOS Objective-C runtime library support functions and data structures.