December 2015
Intermediate to advanced
298 pages
5h 30m
English
Content preview from Scala Functional Programming PatternsBecome 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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Summary
We had a whirlwind tour of traversals in this chapter. We looked at functional combinators and how looping is way different from the traditional Java for loop. We also played with many examples of map, flatMap, filter, reduce, zip, and fold.
Scala for comprehension is a syntactic sugar that hides the complexity arising out of combining combinators. A running validation example delved into the nitty-gritty of the de-sugaring of the for comprehension.
This know-how prepared us to better appreciate flatMap, the glue that binds a pipeline of computations, aka the monad pattern. We saw how the for comprehension realizes monad and what happens behind the scenes. In addition, we had a detailed look at the reduce combinator and its left and right ...
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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.