Levi Ramsey questions

Levi Ramsey answers

• What is the difference between Unit.type and Unit
• What is the "Smart UI Anti-Pattern"?
• How to instantiate a materializer for AkkaStreams when I have a reference to the typed actor system?
• is "implictly" in scala now deprecated or at least not required anymore?
• What is the =!= operator in Scala?
• Run project with java options via sbt
• Why doesn't Haskell need Trampolining?
• How does Spark serialization work for case classes?
• How do I throw an error when an unknown field is present whilst reading JSON with Scala Play?
• Can etcd detect problems and elect leaders for other clusters?