Re: [Haskell-cafe] list of range

Is it necessary to preserve the structure of separate ranges or would it be ok to just store [Int] or Set Int?

I think that it is efficient to keep the structure, but since haskell is lazy, I am wondering, if the best solution would not be to create the Set of Int. (An Ordered Set). the next step of the process, is for each index, to open a file corresponding to the index. In this file there is a bunch of images. At the end we have a Set associated to a number of images. This is the stream of images I have to treat. I split this into chunck and process each of them in parallel via a mapConcurrently. I do not know if this help... cheers Frederic