反射 是一种“程序即数据”范例，允许程序的一部分根据程序集、类型和成员动态查询和调用另一部分。 这对于后期绑定编程模型和工具非常有用。
There are several superusers debating wildcards (tilde ~ etc) in this thread. Observe it really is for Windows seven but I feel the wildcard useage continues to be precisely the same or successful?
然而必须说明的是，没有一种防范泄密的安全技术是绝对坚固的，因为密码有可能被未经授权的人获得。
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” For illustrations or photos, you'll be able to lookup by image written content, together with any text located in an image. Removing the necessity for key phrase matching in file names or content causes it to be a lot more intuitive and efficient for everybody to find the documents, details, or configurations they need.
The Redo selection is barely available after you undo an action so you're able to restore the motion you very last undid.
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而这种原始转换（由子类转换为父类）方向相同的可变性，被称为协变（covariant）；其反向操作则被称为逆变（contravariant）。当同样的情形应用于泛型时，例如：
黑客和密码专家破解加密文件的办法主要有两个，第一是搜索密文是否有重复现象，第二是用暴力破解法获得密钥。首先我们考虑一下初始向量如何防止重复现象，然后再探讨一下防止暴力破解的关键问题。