A skip_line function for std::ifstream

skip_line.cpp

static void skip_line(std::ifstream &ifs)
{
  // Thanks to Eljay and CPPReference
  // https://stackoverflow.com/questions/53693218/how-to-skip-a-line-of-standard-input#comment94242047_53693218
  // https://en.cppreference.com/w/cpp/string/basic_string/getline#Notes
  // ifs.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
  // also thanks to https://stackoverflow.com/a/72365435/8094047
  // and https://jdhao.github.io/2018/12/08/newline_vim_python_sublime_notepad/

  // Skip all characters until newline or carriage return
  char c = '\0';
  while (c != '\n' && c != '\r') {
    ifs.get(c);
  }
  // Skip all whitespace
  ifs >> std::ws;
}