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greener_grass
on Aug 9, 2024
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State Monad for the Rest of Us
Is there are correct way around?
St -> (a, St)
vs
St -> (St, a)
I've found both in the wild and it can be very confusing!
chuckadams
on Aug 9, 2024
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[–]
The order doesn’t matter as long as you’re consistent, but Control.Monad.State uses the first, and you’ll have a bad time (in Haskell anyway) if you’re not compatible with that.
RandomThoughts3
on Aug 9, 2024
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[–]
It’s the same thing. Order doesn’t matter in the tuple. Just use a bind which is in line with the signature of the type you want to use.
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