I am learning iOS programming. After some research, I’ve basically decided to write my apps in Objective C++: writing my models (the M in MVC pattern) in pure C++ as long as possible and writing the UI in Objective C++. This is partially because I have C++ programming background and C++0x makes C++ programming more fun, and partially because it would be easier for me to port the models to other platform.

I will probably use NSString to handle strings, as I need to support Unicode and wchar_t in iOS is 4 bytes, which might make it less-efficient to convert between NSString and std::wstring.

I will write the models as static libraries using separate Xcode projects.