Re: [Haskell-cafe] trying to go from FFT type to Vector.Storable

On 12/05/15 11:43, Henk-Jan van Tuyl wrote:

You could use something like: toDouble :: FFTWReal r => r -> Double toDouble = id

I don't think this is going to typecheck. You probably had something like this in mind: toDouble :: (forall r . FFTWReal r => r) -> Double toDouble d = d Here's a simpler way to do that: toDouble :: Double -> Double toDouble = id Roman