[Haskell-beginners] ByteString unfold that can fail

Oliver Charles ollie at ocharles.org.uk
Tue May 3 08:29:10 UTC 2016

If there is an unfoldM like function then that might do the job, with Maybe
or MaybeT m as your choice of monad.


On Mon, 2 May 2016, 11:49 p.m. John Ky, <newhoggy at gmail.com> wrote:

> Hello,
> Does anyone know of anything like Data.ByteString.unfoldr, except that it
> can fail with a return value?
> Cheers,
> -John
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