I want to have a container of objects which stores unique entities
like a set does, but instead of rejecting the insertion of duplicate
entries, they should be deleted. Subsequent attempts to insert an
already deleted object should be rejected. How should I go about it in
the most efficient way?


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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