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now that we have separated redo and undo and written them in a very functional isolated manner letamp;#39;s go ahead and integrate these with our imperative shell which is our view integration layer this is very easy to do we have our undo and radio functions here all we need to do is call the core functions with the correct arguments so what iamp;#39;m going to do is do that now for example undo weamp;#39;re going to call that one and it takes one argument which is the current move count iamp;#39;m just going to say currentmove.value and pass that one in and weamp;#39;re going to update this to be equal to itself whateveramp;#39;s returned from this function so all we need to do is say currentmove.value is equal to undo which is going to return our new value this is definitely an improvement in my opinion instead of having that hanging undo function with no arguments we now have it with a correct argument here and weamp;#39;re returning the new about value and updating the curr
