这个觉得Google出来的好多说的不是特别清楚,后来在StackOverflow上看到一个答案:the tour of go解释为什么出这个错:
https://tour.golang.org/basics/10
意思就是在func外,每个语句都必须是golang的关键字开始,否则就报这个错.
non-declaration statement outside function body错误
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