Wrapping C++ in ObjC
When faced with mixing C++ and ObjC code, there are two main approaches. One is to just work in Objective-C++ through the entire project. I don’t like this approach. I find the mixing of ObjC and C++ classes very confusing, since they cannot be used interchangeably and require completely different memory management. The mix of class hierarchies and naming conventions lead to a lot of confusion when we introduce people to code that does this kind of mixing.
My opinion is that ObjC and C++ have very different patterns, so it is important to pick one to be in charge and wrap the other. So if you basically have an C++ program than needs a little ObjC to talk to the UI, then wrap the ObjC in C++ objects. If you basically have an ObjC program that needs a C++ middleware, then wrap the C++ objects. Read more…