C++ classes as instance variables of an Objective-C class

Question

I need to mix Objective-C and C++. I would like to hide all the C++ stuff inside one class and keep all the others plain Objective-C. The problem is that I want to have some C++

Answer 1

Is there some particular reason you cannot just use Objective C++ for everything? Simply switch the compiler to Compile Sources As: Objective C++ (or rename all your source files from .cpp or .m to .mm). Then you can freely intermix your C++ and Objective C.

C++ starts spreading to the whole application

What problem is there with that? If your Objective C code is doing only C/Objective C code in general, then it will almost certainly not be affected at all by being compiled as C++. There is no appreciable size or speed performance issues.

The only two downsides I've found are: you cannot (yet) use clang static analyser to analyseC++; some (relatively weird) C code wont work in C++, which is occasionally an issue when using third party C code.