Set arg.
void CL_StringFormat::set_arg( int index, const CL_StringRef & text); void CL_StringFormat::set_arg( int index, int value, int min_length = 0); void CL_StringFormat::set_arg( int index, unsigned int value, int min_length = 0); void CL_StringFormat::set_arg( int index, long unsigned int value, int min_length = 0); void CL_StringFormat::set_arg( int index, long long value, int min_length = 0); void CL_StringFormat::set_arg( int index, unsigned long long value, int min_length = 0); void CL_StringFormat::set_arg( int index, float value); void CL_StringFormat::set_arg( int index, double value);