Proposal to lean course content about applied-scala HOT 2 OPEN

Thanks for compiling this. I sure have missed the conversations over there 😄

Proposed changes

I agree with everything. In regards to prefilling the codecs, I think it's okay because by the end of day 1, they would have written a custom encoder. I'm not sure if they ever do write a custom decoder, but it doesn't really matter because doing it once isn't gonna make them remember it anyways, haha.

Presentation changes

Since the presentations aren't open source, it's hard to discuss them in detail, but...

• The 2 endpoint walkthroughs can be consolidated. We can get rid of HelloWorld.
• Circe encoding: Perhaps we don't teach how to create a Json using Json.obj here
• Circe parsing: Perhaps we can move strToJson to the end of the exercise and call it strToPerson and just teach decode[Person](str). I just noticed we aren't teaching the handy decode which goes from String => A, bypassing Json altogether.
• Circe decoding: I think there's nothing to thin out here. We start off by teaching the anonymous class approach using new Decoder and then tell them how to refactor it to a single abstract method syntax. I think this is useful, lots of people get confused by the single abstract method syntax right off the bat, myself included.

Questions

• I think it's worth thinning out the course in general anyways. That's what I always wanted to do. It's way too hard the way it is currently.

Next steps?

If you want to create separate issues for each of the things we want to change, I'm happy to pick up some of them as we go. I hope to run this course in the next 3 months and I was planning to simplify it in time for it.

from applied-scala.

On second thought, I'm not sure if it will be easy to get rid of HelloWorld entirely. Showing FetchAllMovies as the very first endpoint might be a bit overwhelming. HelloWorld could be a lot shorter though.

I definitely think pre-filling app wiring will save a lot of time. So much time is spent in wiring up in AppRuntime and then updating AppRoutes.

from applied-scala.