[Haskell-beginners] flatten comma operator

Arlen Cuss a at unnali.com
Wed Jun 6 08:36:28 CEST 2012


If (,) is a function that takes two elements and returns the 2-tuple, have you considered something like (,,)? :)



On Wednesday, 6 June 2012 at 4:33 PM, Kees Bleijenberg wrote:

> In 'Real World Haskell' I found code like LiftA2 (,) ....
> Looks odd. But after some experimenting in winghci I found that (,) 1 2 is valid code and is equal to (1,2).
> Now I wonder how to create (1,2,3). I think you need a join or a flatten function or ...? Join doesn't work?
> 
> Kees
> 
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