On Aug 26, 2014 6:16 AM, "Tom Ellis" <tom-lists-haskell-cafe-2013@jaguarpaw.co.uk> wrote:
>
> On Tue, Aug 26, 2014 at 03:54:41AM -0500, Mike Meyer wrote:
> > Weird. I thought that's what I tried. Must have done something else.
>
> You said "need to convert lists of Vector's to a list of lists of
> Doubles" ([[Double]]).  This is just list of Doubles ([Double]).

This operates on a single Vector. You can just map this function over a list to do the requested conversion.