I'm pretty sure this an aggressive copy pasta from the CodeWars site.
Code wars has a solution runner, and I think these are defined in their specific runner. Cause the Rust example is definitely not something that is just globally available in Rust lol
Here is the Codewars link if you want to try it out. I didn't give it a shot so no idea how well it works: codewars.com/kata/decode-the-morse...
That's half an hour of my life I won't get back.
I should have thought about that sooner :-/
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