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How do I properly use std::string on UTF-8 in C++?

My platform is a Mac. I'm a C++ beginner and working on a personal project which processes Chinese and English. UTF-8 is the preferred encoding for this project.

I read some posts on Stack Overflow, and many of them suggest using std::string when dealing with UTF-8 and avoid wchar_t as there's no char8_t right now for UTF-8.

However, none of them talk about how to properly deal with functions like str[i], std::string::size(), std::string::find_first_of() or std::regex as these function usually returns unexpected results when facing UTF-8.

Should I go ahead with std::string or switch to std::wstring? If I should stay with std::string, what's the best practice for one to handle the above problems?

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AltStyle によって変換されたページ (->オリジナル) /