[Haskell-cafe] Data.ByteString.dropWhile

Thomas Conway drtomc at gmail.com
Tue Jul 10 02:15:55 EDT 2007

So the following isn't as clever as the line-noise Don posted, but
should be in the ball-park.

dropFromEnds p = dropWhile p . dropWhileEnd p

dropWhileEnd p bs = take (findFromEndUntil (not p) bs) bs

takeWhileEnd p bs = drop (findFromEndUntil p bs) bs

{- findFromEndUntil is in ByteString.hs, but is not exported -}

Dr Thomas Conway
drtomc at gmail.com

Silence is the perfectest herald of joy:
I were but little happy, if I could say how much.

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