Contents (package MULK.OBJECTIVE-CL)
Constant Variable +NIL+
The Objective-C constant value nil
.
+nil+ is the constant corresponding to the Objective-C nil
value.
+nil+ is not a value that any method invocation should return. Whenever nil
is returned by an Objective-C invocation, It is the job of Objective-CL to convert it to nil. Similarly, null arguments are converted to nil
automatically. Still, there may be occasions in which it is useful to have nil
as an id instance. Therefore, it is provided here.
Note that, in the general case, nil
is not necessarily equal to NULL
.