Norbert added this to properly clean up. The reason is that adding a subclass to ProtoObject adds this class to its subclasses array. see http://code.google.com/p/pharo/issues/detail?id=13 Adrian On Oct 6, 2008, at 21:21 , Stéphane Ducasse wrote:

Hi adrian

could you explain the logic behind this code in the traits tests

self c6: (self createClassNamed: #C6 superclass: ProtoObject uses: { }). ProtoObject removeSubclass: self c6. self c6 superclass: nil.

Especially the ProtoObject

tx

Stef

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