I recently had to do a complete survey of my current $work project. I realized that this "Perl" project is actually written in ten different languages, only some of which are Turing-complete. Ours has:

Think about that - when you're working on your "Perl" project, you're actually working in a polyglot that would have made Babel proud. There's no such thing as the "single-language" programmer and, frankly, I don't think there ever was.

My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to How many languages are in your project? by dragonchild

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