Re: Proposal: Add split and splitWith (trac #2048)

ndmitchell:

Hi

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An often requested function is 'split', to split a list into parts delimited by some separator. ByteString has the functions split and splitWith for this purpose. I propose we add equivalents to Data.List:

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split :: Eq a => a -> [a] -> [[a]] split x = splitWith (x==)

splitWith :: (a -> Bool) -> [a] -> [[a]] splitWith p xs = ys : case zs of [] -> [] _:ws -> splitWith p ws where (ys,zs) = break p xs

trac: http://hackage.haskell.org/trac/ghc/ticket/2048 deadline: two weeks from now, January 30

(+10) Agreement. This is long overdue!

I'd like some QuickCheck properties, so we can avoid the unlines . lines /= id fiasco. Given that, I'd support this too. -- Don