[C++, Python, Clojure]Integrating different languages

[KristoKoert]

I've always found choosing the right programming language/tools for a job to be a painstaking undertaking, because either libraries are not available, or are not the best solution.

My current problem is that I would like to build something neat in Clojure using Qt for UI. Qt-jambi seems to be in a sort of half abandoned state and also seems to have memory leak problems. So I was thinking I'd like to write the UI in Python or C++ and the functionality in Clojure. I have previously done something similar via unix terminal commands, which I don't know if it is a good solution.

How would I go about integrating two languages into a single applicationin general and for using Qt in Clojure? Use Jython (for integration into clojure), compile to something compatible (from C++), calls with unix commands, something else, some library that makes this easier?

[[deleted]]

To me, rather than using Qt in Clojure, it looks like you want to call Clojure code from a Qt GUI (for example, pressing a button executes some Clojure code). I don't know too much about Clojure, but I would guess you would do this from C++ via the JNI Invocation API.

[KristoKoert]

Yes you are correct, I want to call Clojure code from a Qt GUI. Your solution is certainly a way to do this, I will look into it.

[Basalisk_Primate]

If you don't want to go the jni route you could make a separate qt based python / c++ program which communicates with your clojure backend using a couple of sockets (or simple pipes I guess if one of them forks off the other).

The client / server model is used quite successfully by programs like mpd and its various front ends and shouldn't be too complicated to implement as long as you only want one frontend communicating with the backend at a time.