The result is almost a kind of magic — by following a few simple rules, a J2EE application can automatically gain transactional semantics with little or no additional component code.
结果简直是一种魔术—通过遵守几条简单的规则，J2EE应用程序就可以自动获得事务性语义，只需极少或根本不需要额外的组件代码。
The advantages of closures go beyond saving a few lines of code, and the usage patterns go beyond simple iteration.
闭包的好处远不止是节省几行代码，它的使用模式也远不止是简单的迭代。
So in just a few lines of code you created a simple code generator that can dramatically ease your programming tasks.
这样只需要刚才创建的这个简单代码生成器中的几行代码，我们就可以极大地简化编程任务。
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