optics-exercises

Short answers to exercises are found in scratch.md.

Notes

Project generated with:

stack --nix --resolver lts-14.27 new optics-exercises

REPL usage

Some common options:

• stack --nix repl --ghci-options "-XOverloadedStrings -XTypeSynonymInstances -XFlexibleInstances -XRankNTypes"

Diagrams

Lens

Iso

Videos

• Lenses: compositional data access and manipulation (Simon Peyton Jones)
• Writing a profunctor optics library in Haskell from scratch (Chris Penner)
  • (pt. 1)