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record(+Key, ?Value)

Records the term Value at the end of key Key in the indexed database.
+Key
An atom or compound term.
?Value
Any prolog term.

Description

Used to record any prolog term Value at the end of the indexed database entry associated with the key Key. A synonym for recordz/2. In the case of compound terms, all keys of the same name and arity are treated as equal.

If backtracking occurs through the call of record/2 the associated Value is not removed from the indexed database. Recording the same Value twice results in two identical entries in the indexed database. All variables are recorded according to their internal representations.

Fail Conditions

None.

Resatisfiable

No.

Exceptions

(4) instantiation fault
Key is not instantiated.
(5) type error
Key is neither an atom nor a compound term.

Examples

   Success:
    record(a(compound,term),value1).
    record([a,different,term],value2).

    [eclipse]: record(whiskey,jameson),
    >        record(whiskey,glenlivet),
    >        record(whiskey,bushmills).
    yes.
    [eclipse]: recorded(whiskey,Value).
    Value = jameson     More (;)
    Value = glenlivet     More (;)
    Value = bushmills     More (;)
    no (more) solution.
Error:
    record(Key, anything).             (Error 4)
    record("key",anything).            (Error 5)

See Also

recorda / 2, recordz / 2