Hi Corentin,
corentin.dup...@ext.mpsa.com schrieb:
for GHCi, i will try an IORef. Too bad i allready coded it using "StateT
GameState IO ()" extensively through the code ;)
That shouldn't be a problem, you could switch back and forth in
submitRule, approximately like this:
startGame :: IO (Rule -> IO ())
startGame = do
gameState <- newIORef initialState
return (\rule -> wrapStateT (submitRule rule) gameState)
wrapStateT :: StateT s IO a -> IORef s -> IO a
wrapStateT action ref = do
state <- readIORef ref
(answer, state) <- runStateT action state
writeIORef ref state
return answer
Now you can start a game with
mySubmitRule <- startGame
and use mySubmitRule at the ghci prompt afterwards.
Tillmann
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