Hi all,
I just started working with Haskell and am having some difficulties with its
type system.
Here is function that is supposed to calculate the distance between two
coordinates:
distBetween (x1,y1) (x2,y2) = sqrt((x2-x1)^2 + (y2-y1)^2)
I am trying to explictly give it a type signature. Here is what I have tried
and the errors generated by Hugs:
type Point = (Int,Int)
distBetween :: Point -> Point -> Float
ERROR - Type error in explicitly typed binding
*** Term : distBetween
*** Type : Point -> Point -> Int
*** Does not match : Point -> Point -> Float
distBetween :: Point -> Point -> Int
Instance of Floating Int required for definition of distBetween
Any help is appreciated...
Deech
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