[danidiaz]

There's an alternative implementation based on profunctors, discussed here: 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]

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]

You can implement pure profunctor lenses for Haskell too. I don't know if there's a commonly used library implemented though.