Thread: Is there a way to use unescaped backslashes without getting compiler warnings?

I'm using regular expressions and having to escape the backslash hurts readability. I assumed raw string literals would free me of this, but it seems GCC doesn't care.

Code:

std::regex ohmygod("\\((\\d+),0,'(([^']|\\\\')+)','','([^']|\\\\')*'\\)"); // ok

std::regex unescaped("\((\d+),0,'(([^']|\\')+)','','([^']|\\')*'\))"); // warning

std::regex delimited("R(\((\d+),0,'(([^']|\\')+)','','([^']|\\')*'\))R"); // warning

Code:

main.cpp:6:21: warning: unknown escape sequence: '\('
  std::regex delimited("R(\((\d+),0,'(([^']|\\')+)','','([^']|\\')*'\))R");
                     ^
main.cpp:6:21: warning: unknown escape sequence: '\d'
main.cpp:6:21: warning: unknown escape sequence: '\)'

Any way I can avoid this warning?

Ah yes, I misinterpreted the (optional). Using R prefix and delimiters together, it works. Thanks!