This [[concurrent programming]] technique of was invented by the MIT Actors group in the 1970s. It became more well known by its inclusion in [[MultiLisp]]. The use of logic variables for communication in concurrent logic programming languages is quite similar. These started with "Prolog with Freeze" and "IC Prolog", and became a true concurrency primitive with Concurrent Prolog, Flat Concurrent Prolog, Parlog, Vulcan, Janus, Mozart/Oz, Flow Java, and Alice. The single assignment "I-var" from data flow languages, included in Reppy's "Concurrent ML", is much like the concurrent logic variable.
ThisThe pipelining technique (of using promises/futures to overcome latency) was invented independently twice in the 1980s. It was invented at [[Project Xanadu]] (circa 1989) and by [[Barbara Liskov]] in 1988.
Languages containingsupporting "promises/futures/concurrent logic variables/I-vars" include:
* [[Alice programming language|Alice]]
* [[Oz programming language|Oz]]
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Languages containingsupporting promise pipelining include:
