December 2023
Intermediate to advanced
418 pages
9h 25m
English
Content preview from Soar with Haskell
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10
Functors, Applicative Functors, and Traversables
This chapter leads us much further into Haskell’s hierarchy of type classes for type constructors: functors, applicative functors, and traversables.
We will introduce the three abstractions in turn as a generalization of particular list-related functionality: mapping, zipping, and mapping with zipping. These list functions provide a good intuition for the mechanics of the generalizations. However, for applicative functors, the notion of effectful computations provides a much better and more important intuition.
Effectful computations are computations that do not only (or necessarily) produce a result. They also do or can do something additional (such as logging, failing, or changing a mutable ...
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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.