What open source projects would you recommend for people to study to learn how the pros write Scala?
Some of the attributes that I'm looking for - though they don't all have to be present in every exemplary project:
- Idiomatic use of the language and libraries
- Functional programming techniques
- Concurrency (using Actors or other methods)
- Large scale system with many modules
- Readability
- Java interop
- etc.