July 2023
Intermediate to advanced
276 pages
6h 55m
English
Content preview from Functional Programming in Java, 2nd EditionBecome 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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Refactoring to Rework the Logic
Sometimes when refactoring to the functional style, we may have to step back and rethink the logic or the algorithm instead of merely trying to map from the imperative to functional style. If we don’t take an alternative approach in such cases, either we may have issues creating functional style code or the refactored version may be complex and leave us wanting for a better solution. We’ll look at one such problem in this section—this was raised by a developer who was interested in solving this problem and was having a hard time creating a functional equivalent.
Given a string, we want to find the first letter that’s repeated anywhere else in the string. For example, in the string hellothere, the first letter ...
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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.