使用T& amp;有什么问题吗? F代替TRUE&错误的? [英] Is there anything wrong with using T & F instead of TRUE & FALSE?

问题描述

我注意到在R中的函数中使用T和F而不是TRUE和FALSE可以得到相同的结果.当然，T和F更简洁，但是，我看到TRUE和FALSE的使用频率更高.

I noticed that using T and F instead of TRUE and FALSE in functions in R gives me the same results. Of course, T and F are more concise, yet, I see TRUE and FALSE being used more often.

我想知道两者之间是否有区别?使用T和F有什么问题吗?

I was wondering whether there is any difference between the two? Is there anything wrong with using T and F?

推荐答案

T和F，但是TRUE和FALSE是保留字，不能重新定义. >

T and F can be re-defined, but TRUE and FALSE are reserved words and cannot be re-defined.

> TRUE <- 1L
Error in TRUE <- 1L : invalid (do_set) left-hand side to assignment
> FALSE <- 0L
Error in FALSE <- 0L : invalid (do_set) left-hand side to assignment
> T <- F  # yikes, this would be hard to debug!

就我个人而言，当我交互式使用R时，有时会使用T和F，但是我从不在生产代码或程序包中使用它们.

Personally, I sometimes use T and F when I use R interactively, but I never use them in production code or packages.

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