com.google.gwt.emul.java.util.function.Predicate Maven / Gradle / Ivy

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package java.util.function;

import java.util.Objects;

@FunctionalInterface
public interface Predicate {
  default Predicate and(Predicate other) {
    return (t) -> Predicate.this.test(t) && other.test(t);
  }

  static  Predicate isEqual(Object targetRef) {
    return (null == targetRef) ? Objects::isNull : object -> targetRef.equals(object);
  }

  default Predicate negate() {
    return (t) -> !Predicate.this.test(t);
  }

  default Predicate or(Predicate other) {
    assert other != null;
    return (t) -> Predicate.this.test(t) || other.test(t);
  }

  boolean test(T t);

}