관리-도구
편집 파일: swapcase%21-i.yaml
--- !ruby/object:RI::MethodDescription aliases: [] block_params: comment: - !ruby/struct:SM::Flow::P body: Equivalent to <tt>String#swapcase</tt>, but modifies the receiver in place, returning <em>str</em>, or <tt>nil</tt> if no changes were made. full_name: String#swapcase! is_singleton: false name: swapcase! params: | str.swapcase! => str or nil visibility: public