TL;DR:
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Good: AI is great at Elixir. It gets better as your codebase grows.
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Bad: It defaults to defensive, imperative code. You need to be strict about what good Elixir looks like.
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Ugly: It can’t debug concurrent test failures. It doesn’t understand that each test runs in an isolated transaction, or that processes have independent lifecycles. It spirals until you step in.
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Bottom Line: Even with the drawbacks, the productivity gains are off the charts. I expect it will only get better.
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