2016-07-26 15:08 GMT+02:00 Denis Kudriashov <dionisiydk@gmail.com>:

Hi.

Look at UndefinedObject instance side methods. You will see class hierarchy protocol. For example nil understands #subclasses message:

nil subclasses "==> {ProtoObject}"

ProtoObjects superclass is nil, so maybe it just should behave the same way for all other objects.

ByteString superclass subclasses includes: ByteString. "true"

ProtoObject superclass subclasses includes: ProtoObject. "true"

��

It implemented like this:

UndefinedObject >>subclassesDo: aBlock
"Evaluate aBlock with all subclasses of nil.�� Others are not direct subclasses of Class."

^ Class subclassesDo: [:cl |��
cl isMeta ifTrue: [aBlock value: cl soleInstance]].

So my question is: why it needs to be like that? And does it really needed?

I removed all this methods and not saw any problem.��