/* File: Predicate0.java * Contains: An interface for boolean functions of zero arguments. * Author: Jeff Dalton * Created: September 2000 * Updated: Fri Sep 15 22:04:44 2000 by Jeff Dalton * Copyright: (c) 2000, AIAI, University of Edinburgh */ package ix.util; /** * An interface for boolean functions of zero arguments */ public interface Predicate0 { boolean isTrue(); }