Chain of Responsibility(225) Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects, and pass the request along the chain until an object handles it.

Command(245) Encapsulate a request or operation as an object, thereby letting you parameterize clients with different operations, queue or log requests, and support undoable operations.

Interpreter(261)

Chain of Responsibility(225)

Command(245) 는 요청(request)이나 명령(operation)을 object로서 캡슐화시킨다. 그러함으로써 각각 다른 명령을 가진 클라이언트들을 파라미터화 시키고, 요청들을 queue에 쌓거나 정렬하며, 취소가능한형태의 명령들을 지원한다.