Lists allow the same socket to appear more than once in each list, but doing so doesn't make sense: conceptually, what is passed are sets of sockets.
列表中可以允许同一个socket多次出现，但是这样做一点意义都没有：从概念上讲，传入的应该是由socket组成的set。
It defines dynamic strings, variants, character sets, lists and other basic data types along with portable thread and synchronization objects, IP sockets and named pipes.
它定义了动态字符串、通用类型、字符集合、列表和其它基本数据类型以及可遗址的线程和同步对象，ip套接字以及命名管道。
It defines dynamic strings, variants, character sets, lists and other basic data types along with portable thread and synchronization objects, IP sockets and named pipes.
它定义了动态字符串、通用类型、字符集合、列表和其它基本数据类型以及可遗址的线程和同步对象，ip套接字以及命名管道。
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