Proposal: Num instance for tuples
wren ng thornton
wren at freegeek.org
Tue Oct 23 06:41:41 CEST 2012
On 10/19/12 7:29 AM, Simon Marlow wrote:
> 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.
Agreed, another -1.
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