Hello stevieb,
I'm the author of this website.
I adapted the idea from TryRuby.
It's not perfect (checking answers with regex...), but all in all it works.
Latest github version is modular and using mojolicious and websockets.
There is currently no activity on my side about this except maintaining the service.
I had in mind some ideas like eventually reuse another backend (another website or jail technology for code execution) and eventually change the way we check for answer (grammar instead regex ?).
Please tell me how could I help you ?
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