Proposal: Add conspicuously missing Functor instances for tuples

David Feuer david.feuer at
Mon Jan 18 20:20:06 UTC 2016

I'd be strongly +1 on that too! Traversable is strong magic.

On Mon, Jan 18, 2016 at 3:16 PM, Ryan Scott < at> wrote:
> Strong +1 from me. We derive Eq/Ord/Read/Show/etc. for all tuple types
> of size up to 15 as it is, we might as well do the same for Functor.
> (Personally, I'd even argue for adding Foldable and Traversable
> instances as well, but the Foldable instance for pairs has proven to
> be pretty controversial...)
> Ryan S.
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