lyandut

#include <codecvt>
std::string name = "李研"; // GBK encoding

std::wstring w_name = string2wstring(name, ".936");
std::string utf8_name = wstring2utf8(w_name);

lyandut

#include <iostream>
#include <cassert>
#include <iomanip>
#include <fstream>
#include "single_include/nlohmann/json.hpp"

using namespace std;
using json = nlohmann::json;

// add snippnets here.