static constexpr char PROGRESS_PREFIX[] = "PROGRESS:"; static void write_line(const std::string& line, bool show_progress) { if (line.empty()) return; // When not invoked with the -p option, it must skip BEGIN and PROGRESS lines otherwise it// will break adb (which is expecting ei...
constexpr long long operator "" _km(unsigned long long x) { return x * 1000; } long long distance = 20_km; std::cout << "distance:" << distance << "meters\n"; //輸出結果 distance:20000meters 從這個例子我們來看上面_json的含義,它就是給const char*類型即字符串類型添加一個_json后綴...