Chapter 2. The Actor Model with Scala and Akka
There are a few distinct ways to program with actors. The Actor model can be used through an actor library toolkit, or it can be implemented directly in a language. ActorScript is one example of an actor programming language. Actors were added to Smalltalk. Erlang has actors but is not actor-based through and through. Erlang supports actors/processes as first-class concurrency abstractions. More recently, languages such as Scala and Scratch support actor-based programming.
Scala, a Java virtual machine (JVM) language, also does not implement actors as part of a programming language. Rather, Scala comes with an actor library–based toolkit called Akka. Thus, Scala has significant similarities to Erlang ...
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