41 : FD_ { open (file, mode) }
64 FDGuard::operator bool ()
const 69 FDGuard::operator int ()
const FDGuard(const char *file, int mode)
friend void swap(FDGuard &g1, FDGuard &g2)
void swap(FDGuard &g1, FDGuard &g2)
FDGuard & operator=(const FDGuard &)=delete