Adding dup to Data.Tuple?

[David Feuer]

I'm not opposed. Should this be called dup or diagonal? What about larger
tuples?

Side note:
\x -> (x,x) = join (,)

On Sat, Oct 27, 2018, 6:03 PM Ivan Perez <ivan.perez at keera.co.uk> wrote:

> Dear all,
>
> The function \x -> (x,x) is very convenient when working with arrows.
>
> Would it be appropriate to add it to Data.Tuple?
>
> Cheers,
>
> Ivan
>
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