On Sun, Apr 22, 2012 at 04:40, Paul Higham <polygame@mac.com> wrote:
stackPlay.hs:6:7: Not in scope: data constructor `State'

Please excuse the cognitive deficit, but I cannot figure out why this should not work as advertised.

Not your fault; things were rearranged in the library, and `State` is no longer a distinct type (it's `StateT Identity` now).  `state` (lowercase) is the replacement for the old `State` constructor. 

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