Lenses: Yoneda with Adjunctions Posted by Bartosz Milewski under Category Theory, Haskell, Lens, Programming Leave a Comment In the previous post I explored the application of the Yoneda lemma in the functor category to derive some results from the Haskell lens library. In particular I derived the profunctor representation of isos. There is one more trick that is used in the lens library: combinin
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