[Haskell-cafe] Way to implement toFloat :: (Num a) => a -> Float

[Ben Gamari]

EatsKittens <temporalabstraction at gmail.com> writes:

> Is there a way to add a method to a typeclass like num to implement this
> concept? A function that converts any number to floats?
> 
Does the following do what you expect?

realToFrac :: (Fractional b, Real a) => a -> b

realToFrac' :: (Real a) => a -> Float
realToFrac' = realToFrac :: (Real a) => a -> Float

Cheers,

- Ben
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