An object that is the sole argument of the message.
An object that is the result of the message.
This method is the same as performSelector: except that you can supply an argument for aSelector. aSelector should identify a method that takes a single argument of type id. For methods with other argument types and return values, use NSInvocation.
Locates and returns the address of the receiver’s implementation of a method so it can be called as a function.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.