[GHC] #974: Add unzipEithers, lefts, rights to Data.Either
wnoise at ofb.net
Mon Nov 13 13:00:02 EST 2006
On 2006-11-13, roconnor at theorem.ca <roconnor at theorem.ca> wrote:
> My reason for adding [Either a b] -> ([a],[b]) is that at least two
> independent projects from independent authors use it and it seems
> generally widely useful. Althought techinically I don't have the same
> evidence for lefts and rights, I believe such evidence exists. At least
> one instance is for specifying the behaviour of unzipEithers, which is why
> I include it in the same patch.
Well since f x = (lefts x, rights x), why not name f "leftsAndRights",
or "boths", or some such?
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