Re: [nimh-dev] More stuff

[Tom Plagge <tplagge@xxxxxxxxxxxxxxxxx>]

I think this is a very good idea.  A similar idea would work well in
the folder class.

And you're right, it should have been space delimited; that was my mistake.

> > 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.

________________________________________________________________________

Tom Plagge                              UC Berkeley Physics Dept.
351 LeConte Hall                        Voice: (510) 643-1650
Berkeley, CA  94720                     Email: tplagge@xxxxxxxxxxxxxxxxx
________________________________________________________________________

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