[Newbies] How to deep copy elements when using collectons?

[Keith Hodges]

To modify the behaviour of copy to be more appropriate for your class,
the facility is provided via #postCopy.

The basic copy implementation is as follows.

copy

^ self shallowCopy postCopy

specializing #postCopy for your class, it can perfrom further copies of
its inst vars if needed.

postCopy

instVarWithCollection := instVar withCollection copy.

So now the collection is a different collection although it contains the
same elements.


best regards

Keith