:: 在 C++ 中是什么意思?

In this C++ method, I think this method does not return anything, so the prefix is void, what does :: tell the relationships between weight_data and rev_seq(string &seq)? Thanks!

推荐答案

void 是返回类型.:: 是作用域解析操作符，表示rev_seq在weight_data的作用域内.weight_data 可以是命名空间或类(根据您提供的内容，无法确定是哪个).

void is the return type. :: is the scope resolution operator, so it means rev_seq is inside the scope of weight_data. weight_data could be either a namespace or a class (based on what you've given, it's not possible to say which).

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