"Paul Mensonides" <pmenso57@comcast.net> wrote
The MS preprocessor has the __COUNTER__ extension that expands to the next integer every time when used. Can something like this be achieved in a portable manner, maybe with the help of Boost.Preprocessor library?
The best you can do in standard C++ is __LINE__. If you need varying numbers all in the same place (i.e. the same header), you can manually keep track of a counter. It is also possible to hijack the #include mechanism to provide a different number each time a file is included or something like that. In any case, the ways of doing it are a lot more heavyweight than __COUNTER__, but a lot more standard too.
Actually I don't need to have many things on the same line, but I do want to handle inclusions from several headers... Maybe it's somehow possible to generate a unique number from the header file name? Or use this #include mechanism you mentioned? Thanks, Arkadiy