Returns the class definition of a specified class.
SDKs
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Objective-C Runtime
Declaration
func objc_lookUpClass(_ name: UnsafeParameters
nameThe name of the class to look up.
Return Value
The Class object for the named class, or nil if the class is not registered with the Objective-C runtime.
Discussion
objc is different from this function in that if the class is not registered, objc calls the class handler callback and then checks a second time to see whether the class is registered. This function does not call the class handler callback.