19 Oct
2012
19 Oct
'12
7:29 a.m.
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. Cheers, Simon