July 2023
Beginner to intermediate
488 pages
14h
English
book
Functional Programming in Scala, Second Edition
by Runar Bjarnason, Michael Pilquist, Paul Chiusano
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12 Applicative and traversable functors
This chapter covers
- Introducing applicative functors
- Introducing traversable functors
- Defining semigroups
In the previous chapter on monads, we saw how many of the functions we’ve been writing for different combinator libraries can be expressed in terms of a single interface: Monad. Monads provide a powerful interface, as evidenced by the fact that we can use flatMap to essentially write imperative programs in a purely functional way.
In this chapter, we’ll learn about a type of related abstractions, applicative functors, which are less powerful than monads but more general (and hence more common). The process of arriving at applicative functors will also provide some insight into how to discover such ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.