命令,不要去询问(Tell, Don’t Ask) | 外刊IT评论



命令,不要去询问(Tell, Don't Ask) | 外刊IT评论

前些时间我曾经翻译过一篇叫做《这里我说了算!》的文章,里面作者讲述了关于"命令,不要去询问(Tell, Don't Ask)"原则:

我看到的最多被违反的原则是"命令,不要去询问(Tell, Don't Ask)"原则。这个原则讲的是,一个对象应该命令其它对象该做什么,而不是去查询其它对象的状态来决定做什么(查询其它对象的状态来决定做什么也被称作'功能嫉妒(Feature Envy)')。


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