C# 8 is old news. Onward, to C# 9! (C# 已成旧闻, 向前, 抵达 C# 9!) Did you know that planning is already underway for the ninth version of the C# language? 第九版 C# 语言已经在开发中了, 你晓得伐? Now, to be fair, this has been in the planning phases long, LONG, before C# 8…