ruby 删除文件扩展名的最佳方法
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best way to remove file extension
提问by tokhi
What is the shortest way to remove file extension? this is what I have tried:
删除文件扩展名的最短方法是什么？这是我尝试过的：
file = "/home/usr/my_file.xml"
file = File.basename(file)
file.slice! File.extname(file) #=> my_file
回答by Arup Rakshit
Read the documentation of File::basename:
阅读以下文档File::basename：
basename(file_name [, suffix] ) → base_name
Returns the last component of the filename given in file_name, which can be formed using both File::SEPARATOR and File::ALT_SEPARETOR as the separator when File::ALT_SEPARATOR is not nil. If suffixis given and present at the end of file_name, it is removed.
basename(file_name [, suffix] ) → base_name
返回 file_name 中给出的文件名的最后一部分，当 File::ALT_SEPARATOR 不为零时，可以使用 File::SEPARATOR 和 File::ALT_SEPARETOR 作为分隔符形成文件名。如果给定后缀并出现在 file_name 的末尾，则将其删除。
file = "/home/usr/my_file.xml"
File.basename(file,File.extname(file)) # => "my_file"
