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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Chapter 4Transforming Data
If you’re creating business applications, you deal with data all day, from breakfast to dinner and then some. You have to find the average, min, and max; query for the presence of some information; transform one collection into another; slice a collection; group values; and the list goes on.
If you get paid for the number of lines of code you write, then the imperative style is quite suitable. We can write more code and then spend more time trying to figure out why it doesn’t work. Some call that job security, but it’s that something we’ll soon dread.
You’re here because you care about results and not the amount of effort. You want to write less code to get the work done and then easily make changes to it when the ...
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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.