:: 在 C++ 中是什么意思?

2021-12-23 00:00:00 methods c++

void weight_data::rev_seq(string &seq){ 
//TODO
std::reverse(seq.begin(), seq.end());
}

在这个C++的方法中，我认为这个方法没有返回任何东西，所以前缀是void，::告诉了weight_data<之间的关系/code> 和 rev_seq(string &seq)?谢谢！


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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