从完整文件路径查找文件名 [英] Find file name from full file path

问题描述

有没有办法从文件完整路径（文件路径的一部分）中提取文件名，而不用麻烦操纵字符串？

Is there a way to extract the file name from the file full path (part of a file path) without the hassle of manipulating string?

Java中的等效项将是：

The equivalent in Java would be:

File f = new File ("C:/some_dir/a")
f.getName() //output a
f.getFullAbsolutePath() //output c:/some_dir/a

推荐答案

使用

> basename("C:/some_dir/a.ext")
[1] "a.ext"
> dirname("C:/some_dir/a.ext")
[1] "C:/some_dir"

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