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Chain of Responsibility(Chapter 17 of Pro Objective-C Design Patterns for iOS)

摘要: You’d naturally think about using the pattern when 􀀁 There is more than one object that may handle a request and thehandler is known only at runtime. 􀀁 You want to issue a request to a group of objects without specifying aparticular receiver that will handle the request explicitly. 阅读全文

posted @ 2012-05-08 14:35 Ray Z 阅读(227) 评论(0) 推荐(0) 编辑