On Sat, Aug 11, 2012 at 4:14 AM, <o...@okmij.org> wrote: > > I'd like to point out that the only operation we can do on the first > argument of MkFoo is to show to it. This is all we can ever do: > we have no idea of its type but we know we can show it and get a > String. >
That's not all you can do: you can also pass the first argument of MkFoo to a function that expects a Show a => a argument, like the function 'print'. Can you do that with just a String (that represents show x for some x)?
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