Re: [Haskell-beginners] How to display a time difference?

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"Sean" == Sean Lee writes:

Sean> You get some random values? or no change at all on the Sean> state? I'm not sure if the state has changed at all or not. Certainly it has not changed correctly - the move does not get made. As for Daniel's suggestion, I can't compile it because it says I need an instance of NFData for Move.Move. I'm not sure what that involves. Anyway, I don't think that evaluating move is necessarily the solution. I need to force the entire evaluation of modifyIORef. -- Colin Adams Preston Lancashire