"Alexander Seliverstov" <[EMAIL PROTECTED]> writes: > How does caller choose which particular instance of Num they want?
They specify the type... or just pass the result to something that specifies the type. Try it in ghci: Prelude> let f:: Integral i => Integer -> i; f = fromIntegral Prelude> let g :: Int -> Int; g = id Prelude> :t g (f 5) g (f 5) :: Int Prelude> let h :: Integer -> Integer; h = id Prelude> :t h (f 5) h (f 5) :: Integer Prelude> > What the difference between haskell class and interface in object-oriented > languge such Java or C#? Really they are completely different animals that look a lot alike because they serve similar purposes -- convergent evolution! -- Jón Fairbairn [EMAIL PROTECTED] _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
