March 2017
Intermediate to advanced
821 pages
18h 21m
English
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Decorator
The decorator pattern is used to wrap and augment an existing class. Using a decorator pattern is an alternative to subclassing an existing component. Subclassing is typically a compile time operation and is a tight coupling. This means that once subclassing is performed, there is no way to alter it at runtime. In cases where there are many possible subclassings that can act in combination, the number of combinations of subclassings explodes. Let's look at an example.
The armor worn by knights in Westeros can be quite configurable. Armor can be fabricated in a number of different styles: scale, lamellar, chainmail, and so on. In addition to the style of armor, there is also a variety of different face guards, knee, and elbow joints, and, ...
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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.