protein-translation: slightly confusing setup

[ErikSchierboom]

I'm not really sure why the protein-translation exercise has an additional parse function that returns a pub struct CodonsInfo<'a>. It feels a bit weird to me. Maybe a better approach would be to model the codons as an enum?

[senekor]

Looks like the exercise was added in this PR: #603.

There's no discussion on this design descision. It seems to me that it gives students the freedom to prepare the input data for efficient lookup (e.g. hash map), which can then be performed many times. (even though the test suite doesn't do that)

I'm sure the exercise could've been designed a different way, but is it worth it to break existing solutions?

[ErikSchierboom]

I'm sure the exercise could've been designed a different way, but is it worth it to break existing solutions?

I don't think so. I just wanted to discuss some of the design decisions to maybe improve future exercises. I'll post a more detailed reply next week when I'm back at work!