Class SumList

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.list.SumList

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class SumList
extends AbstractSingleResultPredicate

sum_list(X,Y) - sums the elements of a list.

The sum_list(X,Y) goal succeeds if sum of elements in the list X matches Y.

Constructor Summary

Constructors

Constructor	Description
SumList()

Method Summary

Modifier and Type	Method	Description
protected boolean	evaluate(Term input, Term output)

Methods inherited from class AbstractSingleResultPredicate

evaluate, evaluate, evaluate, evaluate, getArithmeticOperators, getFileHandles, getKnowledgeBase, getOperands, getPredicate, getPredicates, getProjogListeners, getSpyPoints, getTermFormatter, init, isRetryable, setKnowledgeBase

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface PredicateFactory

isAlwaysCutOnBacktrack, preprocess

Constructor Details

SumList

public SumList()

Method Details

evaluate

protected boolean evaluate(Term input,
 Term output)

Overrides:

evaluate in class AbstractSingleResultPredicate