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(289) 评论(0) 推荐(0) 编辑
