Functor, Applicative, Monad, Foldable, Traversable instances for (, , ) a b

Herbert Valerio Riedel hvriedel at
Fri Mar 31 14:34:31 UTC 2017

On Thu, Mar 30, 2017 at 10:47 PM Bryan Richter <b at> wrote:

> I just don't know why pairs ever got to Functor. I fear this was an
> ancient decision... no?

If you're curious, this happened over 10 years ago:
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