Free On-line Dictionary of Computing

logic variable

<programming >

A variable in a logic programming language which is initially undefined ("unbound") but may get bound to a value or another logic variable during unification of the containing clause with the current goal. The value to which it is bound may contain other variables which may themselves be bound or unbound. For example, when unifying the clause

 sad(X) :- computer(X, ibmpc).
with the goal
 sad(billgates).
the variable X will become bound to the atom "billgates" yielding the new subgoal "computer(billgates, ibmpc)".

Last updated: 1995年03月14日

Nearby terms:

logic programmingLogic Replacement Technologylogic variable LOGINlog in

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