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A comment on Using the Specification Pattern to Build a Data-Driven Rules Engine. Parent comment

Re:Using the Specification Pattern to Build a Data-Driven Ru... by agentultra on Tuesday March 24, 2020 @01:20PM (#22676541)
Indeed... in Haskell this can be implemented with a GADT and an evaluator which is really easy to express.

Still useful to know the "pattern" regardless of OOP cruft, Javascript prototypes, or Haskell data types.

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