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摘要： 最近要帮朋友画一个数据流程图，让我想起以前软件工程好像学了数据流图，遂上网查了一下区别，发现说法各异，反正这两个词是从Data Flow Diagram和Data Flow Chart翻译过来的，至于对应关系，有的说Data Flow Diagram是数据流图，有的说是数据流程图，甚至还有的人把这两种视作一样的，只是说法习惯不同。 不得已求助于google.com，基本算是搞清楚了，看看维基上关于Data Flow Diagram的解释：Adata-flow diagram(DFD) is a graphical representation of the "flow" o 阅读全文

摘要： Perhaps this is obvious but it wasn’t immediately clear to me so maybe it’s worth documenting for the benefit of future Google searchers. If youuse a TabActivity in an Android applicationyou can probably fit four or maybe five tabs on a standard screen in portrait orientation before things become to 阅读全文