August 2018
Intermediate to advanced
227 pages
4h 16m
Chinese
Content preview from 高效R语言编程
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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.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.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.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.
14
｜
第
1
章
图
1
-
1
：盲打起始位置，各手指所在位置。图片来自 Wikipedia 的，基于知识共享许可证
一致风格和代码惯例
无论是编写代码还是创作诗歌，养成简洁一致的风格对于编程或非编程类的
其他项目都可受益。正如“编程风格”一节所说，风格很大程度取决于个人
喜好。然而，值得注意的是本书开始时的约定是为了更好地提高它的可读性。
我们在全书中使用了一致的写作风格。
•
包名使用粗体格式，如
dplyr
。
•
函数名使用代码字体并附有括号，例如
plot()
或者
median()
。
•
其他
R
语言的对象，例如数据或者函数参数，使用代码字体但无括号，如
x
与
name
。
•
偶尔，我们通过两个冒号形式强调函数的包名，如
microbenchmark::mi-
crobenchmark()
。值得注意的是，如果仅调用该包函数一次，该方式很高效，
因为它避免了链接整个包。
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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.
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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.