3月7日上午，十四届全国人大二次会议新疆代表团对中外记者开放，澎湃新闻记者提问。图自新疆日报
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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