[Haskell-cafe] type keeping rounding, typeable (and a difficulty)
isto.aho at dnainternet.net
Thu Nov 16 15:44:59 EST 2006
ke, 2006-11-15 kello 13:31 -0800, Greg Buchholz kirjoitti:
> isto wrote:
> ] let t = show (typeOf a)
> ] in case t of
> ] "Double" -> roundDDec d a
> ] "Complex Double" -> roundCDec d a
> Maybe you want type classes instead?
aaaa yes, I was blind... Thanks!
I'll guess the reason it didn't compile was different
types at case branches (am I wrong?) Anyhow, do you know that
is it possible to choose the return type somehow in the spirit
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