[Haskell-cafe] Question on nested State monads.
edwards.benj at gmail.com
Sun Dec 29 16:33:31 UTC 2013
(Forwarding to the list, sorry Albert)
On Sunday, 29 December 2013 08:32:06, Benjamin Edwards <
edwards.benj at gmail.com> wrote:
I would also recommend looking at use / zoom from the lens package. I find
them indispensable for when you want to use a compound state. If you just
have two parts you can write all your state calculations on the separate
parts then user StateT m (a,b) r and zoom _1 / zoom _2 to access them in
the same do block.
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