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Datalog in minikanren

datalog.rkt is an implementation of Datalog (currently, without support for negation) in minikanren. It has many comments and two examples (at the bottom of the file).

defunct-datalog.rkt is an attempted implementation that didn't work out. Not many comments, a few examples.

datalog-interpreter.rkt is a Datalog-without-negation interpreter in plain old Racket, no minikanren. Not many comments, a few examples.

TODOs

  • Implement stratified negation.

  • Maybe rewrite datalog.rkt without all the macros, if Will or other folks find them hard to read.

  • See if there's a way to unify query and query-all; those seem kinda redundant. Maybe there's a way to do the fire-all-rules-at-once thing I was going for in defunct-datalog.rkt, the way datalog-interpreter.rkt does?

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