> none of them clearly explain how lenses work I had taken a stab at this with my lens tutorial[1]. But if you just want to use lenses, Joseph Abrahamson's pos

> none of them clearly explain how lenses work I had taken a stab at this with my lens tutorial[1]. But if you just want to use lenses, Joseph Abrahamson's posts[2][3] are much better. And of course, SPJ's talk is great. He's an excellent public speaker. > I'm really disappointed that so many critical Haskell topics only have a single source of truth that is difficult to find. I found the same thing when I started learning Haskell a few years ago, so I started a blog on advanced topics[4]. Since then there have been a lot of excellent haskell posts. In particular, Stephen Diehl[5] and Christopher Done[6] write interesting and easy-to-read posts. The School of Haskell[7] also has advanced, interactive posts by very smart Haskell folks. So this problem is not as dire as this post makes it sound. [1] http://adit.io/posts/2013-07-22-lenses-in-pictures.html http://adit.io/posts/2013-07-22-lenses-in-pictures.html [2] https://www.fpcomplete.com/school/to-infinity-and-beyond/pick-of-the-week/basic-lensing https://www.fpcomplete.com/school/to-infinity-and-beyond/pic... [3] https://www.fpcomplete.com/school/to-infinity-and-beyond/pick-of-the-week/a-little-lens-starter-tutorial https://www.fpcomplete.com/school/to-infinity-and-beyond/pic... [4] adit.io [5] stephendiehl.com [6] chrisdone.com [7] fpcomplete.com/school