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https://docs.microsoft.com/en-us/cpp/cpp/string-and-character-literals-cpp?view=vs-2017 C++ supports various string and character types, and provides 阅读全文
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3.5 – Visibility Rules Lua is a lexically scoped language. The scope of a local variable begins at the first statement after its declaration and lasts 阅读全文
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SQL Server 2005 introduced the APPLY operator, which is like a join clause and it allows joining between two table expressions i.e. joining a left/out 阅读全文