Using C++ with other languages.

Scapix Language Bridge - seamless integration of C++ with other languages

by Boris Rasin

From the article:

Bindings automatically generated directly from C++ headers during build - no need to manually maintain separate IDL definitions or manual bindings. Make a change in your C++ code, press build, then call your new code from Java, Objective C, Swift, Python, JavaScript or C#. Often this would be done in the same IDE, allowing continuous seamless cross-language development.