February 2018
Beginner
200 pages
4h 37m
English
Content preview from Learn Functional Programming with ElixirBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Handling Impure Functions with the Error Monad
The Error monad is a data structure that helps you combine functions that can result in an error. It permits you to put functions into a clear sequence, handling the error at a unique point. It helps you reduce conditional codes when functions can have unexpected results. You should use it when your codebase is filled with situations where you must put many functions in sequence and some of them can fail. For example, maybe you have five functions that must be executed in sequence, but some of them are prone to failure.
You may have heard of monads—they are famous in languages with strong and static typing, such as Haskell. Monads have strong mathematical theory, and concepts like functors, applicatives, ...
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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.