请参见参考资料详细了解内核列表函数。
这两个函数和获取服务器名称列表函数的调用方式类似。
These two functions operate similarly to those which allow you to obtain the list of Server names.
两个非常有用的过程列表函数是filter和map 。
Two particularly useful procedural list functions are filter and map . The filter function takes a list and removes those elements that fail to meet some specified criterion.
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