Computer Dictionary/Algebraic Logic Functional language

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(ALF) A language by Rudolf Opalla which combines functional programming and logic programming techniques.

ALF is based on Horn clause logic with equality which consists of predicates and Horn clauses for [[Computer Dictionary/logic programming|logic programming]], and functions and equations for [[Computer Dictionary/functional programming|functional programming]]. Any functional expression can be used in a goal literal and arbitrary predicates can occur in conditions of equations. ALF uses narrowing and rewriting.

ALF includes a compiler to Warren Abstract Machine code and run-time support. .

["The Implementation of the Functional-Logic Language ALF", M. Hanus and A. Schwab].

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