If the software doesn't compile cleanly, you can try to fix the problem yourself or wait a day or two and hope that somebody else fixes it.
如果软件没有得到彻底的编译,您可以尝试自己解决问题,否则需要等待一两天直到他人帮助您修复问题。
For example, notice that there are multiple ways to see that you have a compile problem.
例如,注意有多种方法来表示您有编译错误。
The problem with this extended Box is that we can only put the contents in a Box whose type parameter is exactly the same as the receiving box. So, for example, the code in Listing 3 won't compile
这个扩展 Box 的问题是,只能将内容放到类型参数与原 box 完全相同的 Box 中。
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