Is there a function \x -> (x, x) in standard libraries?

[Vladislav Zavialov]

map (\x->(x,x)) is quite a punctuation soup compared to ‘map dup’.

- Vlad

> On 24 Jul 2019, at 16:48, Cale Gibbard <cgibbard at gmail.com> wrote:
> 
> Does lambda not exist for a reason?
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