Removes leading and trailing whitespace from str. Returns nil if str was not altered.
Refer to strip for the definition of whitespace.
Returns a copy of str with leading whitespace removed. See also String#rstrip and String#strip.
Refer to strip for the definition of whitespace.
" hello ".lstrip #=> "hello " "hello".lstrip #=> "hello"
Returns a copy of str with trailing whitespace removed. See also String#lstrip and String#strip.
Refer to strip for the definition of whitespace.
" hello ".rstrip #=> " hello" "hello".rstrip #=> "hello"
Removes leading whitespace from str, returning nil if no change was made. See also String#rstrip! and String#strip!.
Refer to strip for the definition of whitespace.
" hello ".lstrip! #=> "hello " "hello ".lstrip! #=> nil "hello".lstrip! #=> nil
Removes trailing whitespace from str, returning nil if no change was made. See also String#lstrip! and String#strip!.
Refer to strip for the definition of whitespace.
" hello ".rstrip! #=> " hello" " hello".rstrip! #=> nil "hello".rstrip! #=> nil
Returns underlying String object, the subject of IO.