Flow Java is a conservative extension to the Java programming language. It integrates single assignment variables and logic variables, to Java. Its development was influenced by Mozart/Oz. Conceptually, the extension is similar to adding immutable futures but goes beyond that by incorporating equivalence groups.
single Object s;
...which introduces a single assignment variable, and...
s @= new Object();
...which binds s to a new object. Or...
Object o = new Object; s @= o;
...which binds s to o. This makes s equivalent to o.
- Colloquium on Implementation of Constraint and Logic Programming Systems (CICLOPS) (2004). "Implementation Strategies for Single Assignment Variables" (PDF).
- Proceedings of the Nineteenth International Conference on Logic Programming (2003). "Flow Java: Declarative Concurrency for Java" (PDF).
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