Re: [Haskell-cafe] The Good, the Bad and the GUI

On Wed, Aug 13, 2014 at 05:21:28PM -0700, John Lato wrote:

On Wed, Aug 13, 2014 at 4:21 PM, Tom Ellis

...

data LineItem = LineItem { name :: Maybe String , quantity :: Maybe Quantity , price :: Maybe Price }

Rather than this definition, what about something like:

data LineItemF f = LineItem { name :: f String , quantity :: f Quantity , price :: f Price }

It seems Wojtek already objected to this approach, though perhaps that objection could be overcome http://www.haskell.org/pipermail/haskell-cafe/2014-August/115528.html