if you’re writing code that’s using lots of beautiful, immutable data structures, case classes appear to be a godsend (天賜的)
New York is composting (堆肥) too
However at any time we can call become(), which accept any method compliant (兼容) with receive signature as an argument.
Thus, the vast majority, if not all, of your classes will use the SLF4J API and will be oblivious (無視) to the existence of logback.
Lest (迅速的) we forget, Actors are worked with asynchronously – we are not blocking while we wait for their actions to complete.