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There's an alternative implementation based on profunctors, discussed here: https://pay.reddit.com/r/haskell/comments/4poiq5/phil_freeman_fun_with_profunctors/

There's an alternative implementation based on profunctors, discussed here: https://pay.reddit.com/r/haskell/comments/4poiq5/phil_freeman_fun_with_profunctors/ https://pay.reddit.com/r/haskell/comments/4poiq5/phil_freema... "lens" can be complex, but it also makes an effort to fit well with the standard Foldable/Traversable/Applicative idioms of Haskell, and it can be seen as an extension of them, both in functionality and in nomenclature.

cm3 10y ago
Thanks for the link and it seems fresh off the press. Is this for Purescript only? FYI, you can omit "pay." if you added it to get https.
- tome 10y ago
  You can implement pure profunctor lenses for Haskell too. I don't know if there's a commonly used library implemented though.