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Command(Chapter 20 of Pro Objective-C Design Patterns for iOS)

摘要: You’d naturally think about using the pattern when 􀀁 You want your application to support undo/redo. 􀀁 You want to parameterize an action as an object to perform operationsand replace callbacks with different command objects 􀀁 You want to specify, queue, and execute requests at different times. . 阅读全文

posted @ 2012-05-17 14:11 Ray Z 阅读(265) 评论(0) 推荐(0) 编辑