best way to remove file extension [duplicate]

问题:

This question already has answers here:

How to get filename without extension from file path in Ruby (9 answers)

Closed 5 years ago.

What is the shortest way to remove file extension? this is what I have tried:

file = "/home/usr/my_file.xml"
file = File.basename(file)
file.slice! File.extname(file)   #=> my_file

回答1:

Read the documentation of 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 suffix is given and present at the end of file_name, it is removed.

file = "/home/usr/my_file.xml"
File.basename(file,File.extname(file)) # => "my_file"