I know Num is a class, and Double is an instance of the Num class. I guess
using Num would make it more generic, but I don't see why either one would
be better in this particular function.
On Fri, Dec 13, 2013 at 4:20 PM, Kim-Ee Yeoh
On Sat, Dec 14, 2013 at 4:07 AM, Andrew Fleckenstein < andrew.fleckenstein@gmail.com> wrote:
I know it has something to do with types,
Right! :)
but whenever I try to add a type signature to the functions it just messes everything up even more.
This works: let a :: [Double]; a = [-1,2,-6,2]
This works too: let a :: Num a => [a]; a = [-1,2,-6,2]
What do you think are the pros and cons of either?
-- Kim-Ee
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