Re: isKindOf: - GSObjCIsKindOf

[Marko Mikulicic]

Nicola Pero wrote:
>>It seems that the class method +isKindOfClass: has precedence over the
>>instance method -isKindOfClass: defined in NSObject (an thus 
inherited >>by every class object).
>> The +isKindOfClass: is defined with the == operator and NSObject.
>>Is this correct ?

>Yes - according to the doc, this is what other openstep systems do


Why duplicate the isMemberOf method and why deviate from the semantic
of the instance method isKindOfClass ?

Objective-c is based on smalltalk and it seems very strange to me that
the concept of "kind" is so deviated, unless some important reason
induced this design decision. Somebody knows why ?
(Strange, I looked in the specs of OpenStep (on gnustep.org) and in the 
docs of MacOSX and I didn't find a single word on isKindOfClass.)

Marko