September 2016
Intermediate to advanced
332 pages
6h 20m
English
Content preview from Modular Programming with PHP 7Become 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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Interface Segregation Principle
The Interface Segregation Principle states that clients should only implement interfaces they actually use. They should not be forced to implement interfaces they do not use. As per the definition found on Wikipedia:
"many client-specific interfaces are better than one general-purpose interface"
What this means is that we should split large and fat interfaces into several small and lighter ones, segregating it so that smaller interfaces are based on groups of methods, each serving one specific functionality.
Let's take a look at the following leaky abstraction that violates the ISP:
interface Appliance { public function powerOn(); public function powerOff(); public function bake(); public function mix(); public function ...Become 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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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.