Re: [nimh-dev] More stuff

["Jon Stewart" <stew1@xxxxxxxxxxx>]

> Oh, ok. Well, it might make sense to validate but not explode sequences. 
> Say I have a folder with 10k messages in it, and I do 'scan 1-10000'. I'm 
> not sure that we should create an array with 10k elements at parse-time. 
> Anything which needs the actual message numbers can just call 
> sequence.message_numbers(), and the expansion could be done then.


As far as implementation goes, a generator/iterator type of function would 
be a good idea. Each time you call it, the function evaluates lazily and 
returns the next message item. Kind of a high-level functional technique, 
so there's some overhead, but it is scalable. We could also use it, in the 
future, to define infinite sequences, filtering, etc.


Jon
-- 
Jon Stewart                                 Advanced Los Angeles C++
stew1@xxxxxxxxxxx                           http://www.alacpp.org
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