Documentation for method WHICH, assembled from the following types:
multi method WHICH(--> ObjAt)
Returns an object of type ObjAt which uniquely identifies the object. Value types override this method which makes sure that two equivalent objects return the same return value from
say 42.WHICH eq 42.WHICH; # OUTPUT: «True␤»
method WHICH(IO::Special: --> Str)
This returns a string that identifies the object.