Haskell, Freer monads 



A lot of effort in goes toward trying to make a pandas-like column data store, and it always tends to be a bit heavy on the template Haskell and typelevel tricks. I feel emulating Python is probably the wrong way to look at the problem.

The final encoding of freer monads is both faster and more intuitive than the initial encoding. As a ReaderT IO person, I'm convinced final freer is a good alternative for most use cases


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