[Newbies] Collection subclasses

[Rob Rothwell]

If I create a simple object subclassed from Collection,
SequenceableCollection, or ArrayedCollection called CollectionObject, with

CollectionObject>>#initialize
     self halt.

and execute:

CollectionObject new.

the halt is executed.

Whereas, if I subclass CollectionObject from:

Set
Dictionary
OrderedCollection
Array

It does not.

Is one not supposed to make subclasses of these classes, and if so, why not?

I have an object that is most naturally a Dictionary-like object with
various subclasses, but I can not initialize it...

Thank you; I feel I am missing something very basic in my understanding!

Rob Rothwell
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