如何有效地从 function 返回 vector.data() 指针

Question

Please refer the code

class vec {

public: // Want a function here

private:
std::vector<int> abc;

};

I want a public member function, which efficiently returns vector pointer [using abc.data() or any other method will do]. How can I write the function?

Answer 1

const int * func const {return abc.data();}