“Abstract: Have you heard about lenses? How about traversals? Prisms? Profunctors?What is all that mumbo jumbo about and why is it useful for programming?We will be talking about all of that and seeing some examples in purescript.It will be short and simple, you don’t even need to know purescript to understand the examples, just some FP and it will be easier if you know haskell already but also not a prerequisite.Agenda:* Introduction to purescript* What, Why, How?* FP data structures* Lenses* Optics and refactoring* Operating on whole collections* Single elements in arrays* Sum types…” 

Price: Free

Link: https://www.meetup.com/MoedegruppeFunktionelleKoebenhavnere/events/255476889/