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 7. Of Visitors and Chains of Responsibilities
In this chapter, we will look at two important design patterns, namely visitors and chains of responsibilities. These patterns help us model real-world scenarios in a pretty neat fashion. Let's first look at the problem domain.
Rakesh and Nita are happily married. One fine evening, Rakesh gets pleasantly surprised as Prakash comes visiting. Prakash is his childhood buddy and is in town on business. Prakash gets to know of Rakesh living in the same town and comes home, and the buddies meet after a span of many years. Prakash is meeting his friend's wife for the first time, though. They greet each other, well, a little formally. Prakash and Rakesh, on the other hand, back slap each other and enquire ...
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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.