instance method String#strip

文字列先頭と末尾の空白文字を全て取り除いた文字列を生成して返します。空白文字の定義は " \t\r\n\f\v\0" です。

p "  abc  \r\n".strip    # => "abc"
p "abc\n".strip          # => "abc"
p "  abc".strip          # => "abc"
p "abc".strip            # => "abc"
p "  \0  abc  \0".strip  # => "abc"

str = "\tabc\n"
p str.strip              # => "abc"
p str                    # => "\tabc\n" (元の文字列は変化しない)

[SEE_ALSO] String#lstrip, String#rstrip