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作者 Re:visitor感觉有点麻烦,不如直接判断? [Re:jameszhang]
zyzhang

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发贴: 155
积分: 30
于 2004-12-20 20:21 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
Actually, Visitor design pattern is very powerful if you can fit them in the right problem context. you can find loads of places(apache, middleware, xml utilities, and etc) using the idea behind visitor design pattern.

I used to using the combination of Composite and Visitor to tranverse tree-like data structure and adding the required handling methods in seperate visitor classes. It can help you gain the advantage of clean (distributing the responsibility), flexible and extensible design objectives.




话题树型展开
人气 标题 作者 字数 发贴时间
10111 visitor感觉有点麻烦,不如直接判断? jameszhang 54 2004-12-17 16:50
8189 Re:visitor感觉有点麻烦,不如直接判断? justin_here 28 2004-12-17 20:10
8176 Re:visitor感觉有点麻烦,不如直接判断? emarket 232 2004-12-17 22:33
8217 Re:visitor感觉有点麻烦,不如直接判断? jameszhang 62 2004-12-18 08:06
8106 Re:visitor感觉有点麻烦,不如直接判断? emarket 76 2004-12-18 17:21
8176 Re:visitor感觉有点麻烦,不如直接判断? floater 487 2004-12-19 02:45
8133 Re:visitor感觉有点麻烦,不如直接判断? jameszhang 65 2004-12-18 22:31
9002 Re:visitor感觉有点麻烦,不如直接判断? zyzhang 509 2004-12-20 20:21

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