June 2016
Beginner to intermediate
292 pages
6h 8m
English
Content preview from Mastering JavaScript Object-Oriented ProgrammingBecome 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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Contracts and interfaces
A way to manage interactions between objects is to establish some specific rules so that an object declares what it needs and another object declares what it implements, that is a contract. As in a business context, a contract is an agreement between two or more parties for the doing of something specified. For example, in the interaction between two software components, such as objects, we can establish how an object can ask another object to perform some actions in order to achieve a specific goal. With reference to our example of a software house that wants to hire developers, the contract between it and the candidates establishes that the developer must be able to write code.
So, while a contract is a general agreement ...
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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.