Yep me too. People are too quick to dismiss the cross language issues which can in my experience can slowly erode the benefit. Typically you use an FFI to acc

Yep me too. People are too quick to dismiss the cross language issues which can in my experience can slowly erode the benefit. Typically you use an FFI to access particular functionality offered in libraries/classes only offered in another language. In my experience it is only a temporary solution, a does-it-work test. After that you need to recode. Having said that, in my experience Lua(JIT) does this pretty well with C libraries but Lua was designed as the scripting companion to C from day one. The JVM offers a better place to tackle these issues. Scala and Java cross calling is often more than adequate. Perhaps a Julia compiler for the JVM could be a step in the right direction.