Stripping whitespace from the end of a string is done in Ruby using the
String#rstrip method.
{{code:php $result = rtrim("hello world \n"); var_export($result); // => 'hello world' }}
{{code:ruby p "hello world \n".rstrip # => "hello world" }}
PHP's rtrim function has a second argument to specify the characters to
strip. We can do this in Ruby using the String#gsub method.
{{code:php $result = rtrim("/Users/joe/work/ ", " /"); var_export($result); // => '/Users/joe/work' }}
{{code:ruby chars = " /" p "/Users/joe/work/ ".gsub(/[#{chars}]+$/, '') # => "/Users/joe/work" }}
{{related: strings/trim strings/ltrim }}