[Haskell-cafe] On to applicative

Stephen Tetley stephen.tetley at gmail.com
Sun Aug 29 02:51:14 EDT 2010

On 29 August 2010 02:06, Brandon S Allbery KF8NH <allbery at ece.cmu.edu> wrote:
> Hash: SHA1
> On 8/28/10 20:43 , michael rice wrote:

> Historical accident, to wit:  Haskell 98 minimally defined Either in the
> Prelude, so in practice we get the basic definitions (Either itself and its
> Functor and Monad instances) from the Prelude and other utility functions
> from Data.Either.

One might also say its a historical accident that Either isn't an
instance of Bifunctor - "Equal rights for Lefts!", but that's another

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