Re: [Haskell-cafe] Splitting a string into chunks

On 2006-01-13 at 13:32PST Jared Updike wrote:

That works except it loses single newline characters.

let s = "1234\n5678\n\nabcdefghijklmnopq\n\n,,.,.,." Prelude> blocks s ["12345678","abcdefghijklmnopq",",,.,.,."]

Also the argument to groupBy ought to be some sort of equivalence relation. blocks = map unlines . filter (all $ not . null) . groupBy (\a b -> not (null b|| null a)) . lines ... but that suffers from the somewhat questionable properties of lines and unlines. -- Jón Fairbairn Jon.Fairbairn at cl.cam.ac.uk