Note: If you already understand the Aggregator class and simply want to view an example of how it’s implemented in Scala, feel free to skip to the “Using our Aggregators” section.

Type-safe Aggregations

What are they?

You’re in an airport waiting for your luggage at the baggage claim. The internal turmoil is rising inside of you, as most other passengers have received their luggage by now and you sure don’t want to lose your clothes, your toiletries, or that bottle of deluxe craft beer you checked. Just as you start to despair, you see it: a large, bright orange suitcase that is…