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haskell / mtl

The Monad Transformer Library
http://www.haskell.org/haskellwiki/Monad_Transformers
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MonadSelect, laws, docs, helpers #112

Closed kozross closed 2 years ago

kozross commented 2 years ago

This defines a MonadSelect and LiftingSelect, similar to MonadAccum and LiftingAccum. I'm not 100% confident on laws and effect descriptions, but this is the best I could come up with.

Completes all outstanding tasks in #86 to the best of my understanding.