如何在R的setwd()命令中断行？

Question

我尝试将所有R脚本行保持在80个字符以下.无论何时涉及到字符串,这都可能是一个挑战,但通常只是在不使用任何特殊字符的情况下打破行,如下所示:

plot(x, y, main = "some reeeealy long title, so long that
                   I need to break it into several lines
                   in order to satisfy my ****-retentive
                   self.")

但是,有些功能setwd()只是不让我这样做.例如,跑步

setwd("/folder/another folder/yet another folder/
      what are you doing, hiding pr0n?/I think I've made my point/")

返回以下错误:

Error in setwd("/folder/another folder/yet another folder/\n
      what are you doing, hiding pr0n?/I think I've made my point/") : 
cannot change working directory

我试过在斜线角色以外的不同点上制动线,但是我无法让它起作用.我能找到的唯一解决方法是运行

setwd(paste("/folder/another folder/yet another folder/",
            "what are you doing, hiding pr0n?/I think I've made my point/",
            sep = "")

哪个有效,但为了尊重一些自定义的规则,似乎很多混乱.

是否有更优雅的方式来实现这一目标？

Answer 1

一般来说,这paste是我能想到的唯一方法,但是,在这种特殊情况下,它file.path是一个更好的选择,而不是paste自动为您的平台提供正确的分离字符.

file.path("/folder", "another folder", "yet another folder",
            "what are you doing, hiding pr0n?",
            "I think I've made my point")