[Haskell-cafe] Adding state to a library

[Kevin Jardine]

I have a library of functions that all take cfg parameter (and usually
others) and return results in the IO monad.

It is sometimes useful to drop the config parameter by using a state-like
monad..

I have found that I can wrap all my functions like so:

withLibrary cfg f = f cfg

stateF a b c d =
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