August 2021
Intermediate to advanced
450 pages
4h 46m
Chinese
Content preview from 面向对象的思考过程（原书第5版）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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2.1.1 接口
呈现给终端用户的服务构成了接口。最佳实践中，只呈现给用户他们需要的服务。当然，不同的人对用户需要什么服务可能持有不同看法。如果你把10个人放到一个屋子让他们每个人进行独立设计，你可能会得到10份完全不同的设计，而且这些设计都没什么错。然而，作为一个通用的规则，一个类的接口应该只包含需要用户知道的东西。在烤面包机例子中，用户只需要知道烤面包机必须插到接口上（这个例子中接口就是电源插座）以及如何操作烤面包机本身。
识别用户
设计类时最重要的考虑大概就是识别类的读者（或用户）。
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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.