A family of languages (not a specific language) based on the ActorsModel
Some of these languages are described by GulAgha
in Actors: A Model of Concurrent Computation in Distributed Systems
(The Mit Press Series in Artificial Intelligence) ISBN 0-262-01092-5
Actors are objects that change role and send messages to mailboxes instead of directly to each other. They are a very elegant distributed programming concept.
Some discussion of the actors model that was here previously has been moved to ActorsModel
maintains a list of actor languages at http://wayback.archive.org/web/20060615012035/http://www.dekorte.com/docs/actors/
(Act 1, 2 and 3) are the original actor languages designed at MIT by CarlHewitt
is an actor dialect of JavaLanguage
is an actor language that focusses on the security benefits of the actors model.
's attempt to understand CarlHewitt
resulted in the creation of the SchemeLanguage
. A language based on Scheme that is even closer to the pure actors model is DoubleYouSeven
Sussman and Steele arguably got continuations wrong; continuations in the actor model do not have the security problems that caused them to be omitted from DoubleYouSeven. In particular, Scheme continuations can return more than once to code that is unprepared for this. In the actor model, OTOH, an actor
can be written to respond a continuation more than once, but that would have to be explicitly programmed. Also note that actor continuations are a derived concept, whereas in implementations of Scheme they have to be supported as a primitive.
(also called Caltrop) (not really... but it uses the word 'actor' to describe DataflowProgramming units.)
(but not OriginalIoLanguage
, which despite being based on continuations is sequential).
(Erlang processes correspond approximately to actors, although in the current implementations port/process IDs can be forged).
is a Java implementation of actors.
is an actors-based GraphicalProgrammingLanguage
is based on the JoinCalculus
, which is equivalent to actors.
is also based on the JoinCalculus
is based on a variant of the PiCalculus
. The differences between this variant and the usual PiCalculus
make it much closer to actors.
is a Smalltalk library (available for Squeak) the implements an Actors workbenck.
Not the same as the circa 1990 Whitewater Group Win16 pascal-like OO programming language ActorLanguage
Also see CommunicatingSequentialProcesses