On 14/06/12 07:27, Tassilo Horn wrote:
I quickly glanced over your code. Why do you still have `undo`? That shouldn't be needed in a fully immutable world. If you make a move just for trying out, then simply don't reset! your atom with the new value of the current board.
Undo is still there cos I want to have an undo button on my gui for people to undo their moves after they've been properly executed (not just tried)...in other words it is not there to help with the recursion any more...I don't know if you noticed but i have a 'try-move' fn which just calls move without resetting the atom, an 'execute' which resets the atom with the result of 'try-move', and an 'undo' which again does not reset the atom...So it is only through 'execute' that the world can be changed and it is always the atom that changes - not like before when the world could change without touching the atom...
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