I suspect this definition is what Sebastian meant by "converting back and forth to ordinary lists".

2011/8/29 Ryan Ingram <ryani.spam@gmail.com>


On Sun, Aug 28, 2011 at 8:24 PM, Maciej Marcin Piechotka <uzytkownik2@gmail.com> wrote:
f `fmap` FList g = _|_
f `fmap` FList g = map id
f `fmap` FList g = map _|_
(+ variation of _|_*)

f `fmap` FList g = \bs -> map f (g []) ++ bs



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