type Transducer x y = forall b. (b -> y -> b) -> (b -> x -> b)
https://github.com/bitemyapp/learnhaskell/blob/master/dialog...
type Transducer x y = forall b. (b -> y -> b) -> (b -> x -> b)
https://github.com/bitemyapp/learnhaskell/blob/master/dialog...