Here's how to work it without even using the state monad: https://news.ycombinator.com/item?id=8149200 https://news.ycombinator.com/item?id=8149200 It's quite

Here's how to work it without even using the state monad: https://news.ycombinator.com/item?id=8149200 https://news.ycombinator.com/item?id=8149200 It's quite a bit different from this formulation.