04.10.17 07:58, Nick Coghlan пише:
For deque specifically, I like Steven D'Aprano's suggestion of a "__dropped__" or "__discard__" subclassing API that makes it straightforward to change the way that queue overruns are handled (especially if raising an exception from the new subclass method can prevent the collection modification entirely - that way you could readily change the deque semantics in a subclass such that if the queue fills up, submitters start getting errors instead of silently discarding older messages, allowing backpressure to be more easily propagated through a system of queues).
Wouldn't this harm performance? Looking up the attribute of the type is more costly than pushing/popping the item in the deque.
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