Class IsList

java.lang.Object

org.projog.core.predicate.AbstractSingleResultPredicate

org.projog.core.predicate.builtin.classify.IsList

All Implemented Interfaces:

KnowledgeBaseConsumer, PredicateFactory

public final class IsList
extends AbstractSingleResultPredicate

is_list(X) - checks that a term is a list.

is_list(X) succeeds if X currently stands for a list.

Constructor Summary

Constructors

Constructor	Description
IsList()

Method Summary

Modifier and Type	Method	Description
protected boolean	evaluate(Term arg)

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

IsList

public IsList()

Method Details

evaluate

protected boolean evaluate(Term arg)

Overrides:

evaluate in class AbstractSingleResultPredicate