Proposal: Num instance for tuples
marlowsd at gmail.com
Fri Oct 19 13:29:13 CEST 2012
On 18/10/2012 11:07, Henning Thielemann wrote:
> On Thu, 18 Oct 2012, Twan van Laarhoven wrote:
>> One piece of utility code that I find myself writing over and over
>> again is the pointwise Num instance for tuples, i.e.
> For my taste, writing
> 2 :: (Int, Integer)
> abs (x,y)
> should yield a compiler error and the compiler should not try to
> interpret it in some way. For the cases where you need these instances I
> suggest you use custom data types.
Agreed, -1 from me.
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