Let's meet at UWAGA PIWO near the conference venue. If you're a beer geek, ScalaWaw thinks you'll like the place! There will be other drink and food options available. The meeting starts at 18:00 and will continue until late at night. You're welcome to attend, even if you're not attending the conference the next day! All the event details are on Meetup.
How Libretto, a Scala DSL for concurrent programming, can be used for writing custom stream operators