大家好，我是小玉的编辑。小玉在网上搜集了一些百叶窗盒子里双语例句的相关信息，大家分享一下，以便更好的理解。
When we define our interfaces in C# 4.0, we are allowed to mark each of the generic parameters as in or out. If we try to set a generic parameter as out and that\'d lead to a problem, the compiler rai
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