Objective-C & C++

[Indie Mac]

Is it possible to mix C++ source code with Objective-C source code (useful for porting a PC game to Cocoa). Any problems/fyi's to know about, if it is possible?

Thanks,

Mark

[Jake]

Yes, name files with the .mm extension. Compiling will be very slow though.

[Indie Mac]

So could an ordinary ObjC (no C++ code used) be .mm as well (for simplistic sake...). Also, is it just compile times, or are run times slow as well? Thanks for your prompt reply.

Mark

[TomorrowPlusX]

Run time is fine. It's just a hit at compile time.

Personally, when I need to do stuff like this, I just make a wrapper C++ class with a pure C++ header file. Then C++ code can call the wrapper without needing to be Objective-C++.

For example, just a few days ago I wrote a complete C++ binding to NSUserDefaults and NSDictionary, using stl::map and the like as my C++ datatype. very clean, very easy to call from pure C++ code.

[MattDiamond]

I recently described how I keep my own C++ and ObjC++ code segregated in this thread: http://www.idevgames.com/forum/showthread.php?t=8221