You wouldn't need any of this if it were done properly. C# is a good demonstration of the principle and I'm sure Java could support something similar. In the ca

You wouldn't need any of this if it were done properly. C# is a good demonstration of the principle and I'm sure Java could support something similar. In the case of C#, forward declarations are unnecessary, and if you want/need to see something like a .h file then one can be generated automatically from the metadata included in the binary. In fact Objective-C already includes pretty much everything necessary in the binary already, as you can see by using class-dump. Perhaps additional work would be required to support exposing absolutely everything that might be required, but there's no obvious reason why the language couldn't be extended to allow direct use of compiled code, with no need for a .h file.