18 Mar
2004
18 Mar
'04
2:07 p.m.
I don't understand why I get this error. I mean, apparently "/" is not defined for integers but I don't know how to "cast" the result of the length function into a Double...
Use div for dividing integers with loss of precision: 3 `div` 2 (or: div 3 2) == 1 "Casting" an Int to a Float/Double can be done using fromIntegral: fromIntegral (length [1,2]) / 3 == 0.6666666666666666
Besides, a simple integer division works:
Prelude> 2 / 3 0.6666666666666666
This is not an integer division. Writing down a literal (like 2 or 3) denotes a number, not necessarily an Int. The context will influence what type it will be. Something I find really confusing myself, too (which is why it is not in Helium :-). Greetings, Arjan