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java: System.out.println(1 + (9 - 1) >> 1); // OUPUT: "4"
golang: fmt.Println(1 + (9 - 1) >> 1) // OUPUT: "5"
Go:https://kuree.gitbooks.io/the-go-programming-language-report/content/31/text.html
Java:https://introcs.cs.princeton.edu/java/11precedence/
python :http://www.mathcs.emory.edu/~valerie/courses/fall10/155/resources/op_precedence.html
C/C++:http://en.cppreference.com/w/c/language/operator_precedence
似乎只有 golang >> 优先于 +？但是为什么？