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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Chapter 8. Traversals – Mapping/Filtering/Folding/Reducing
We, software developers, love creating data structures and traversing them. We traverse structures so as to visit elements therein. A traversal typically uses a loop.
However, doesn't writing a for loop (or a foreach loop) seem like a routine job, also known as a boilerplate? I would rather concentrate on the element and let the language figure out and write the looping for me. Again, what I wish to do with each element depends on the context (that is, it varies). On the other hand, writing a for loop seems like typing the same chars again and again.
IDEs like Eclipse provide helpful completions for such routine and boring stuff. However, could we have the loop abstracted away, and instead ...
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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.