I'm currently trying something along the lines of a sort.compare, but as i'm never sure how many mini-lists i'll end up with, i'm not sure how exactly to begin. Maybe something like a C vector, i.e. a list of pointers to other lists? Or more specifically, compare dates in my list, push that into some empty dates[], then do something along the lines of for looping over dates to create subset lists, and nesting some more compares within these lists to further sort the data by id. Sound crazy or plausible?
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