Optics and Type Classes in ArrowKotlin Brooklyn Meetup · Wed Jan 17 2018 · One min readcoreopticsslidedecksOptics and Type Classes in Arrow@msya explains how to use various optics and type classes in Arrow. He discusses optics such as Lens and Iso. He also goes over the purpose for type classes and how KEEP-87 will make it easier to implement them. Functional Programming with Arrow