rfc: include bimap into Data.Either

[Joachim Breitner]

Hi,

Am Sonntag, den 20.04.2014, 19:20 +0200 schrieb Dominique Devriese:
> * rename bimap to mapEither (or perhaps mapBoth)

+1

> * implement the functions as renames when possible: "mapEither =
> Control.Arrow.(+++)" and similarly.

*shrug* doesn’t really matter (unless this would hurt performance)

> * also add "mapRight :: (a -> b) -> Either c a -> Either c b"

+1


Thinking in expertise levels, using Either comes much earlier than using
ArrowChoice, and we should also suit the users that are on that level. A
reference to the more advanced functions should be added to the haddock.

Greetings,
Joachim

-- 
Joachim “nomeata” Breitner
  mail at joachim-breitner.de • http://www.joachim-breitner.de/
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  Debian Developer: nomeata at debian.org

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