/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.lang3.function;

import java.util.Objects;
import java.util.function.DoublePredicate;

A functional interface like DoublePredicate that declares a Throwable.
Type parameters:
  • <E> – Thrown exception.
Since:3.11
/** * A functional interface like {@link DoublePredicate} that declares a {@code Throwable}. * * @param <E> Thrown exception. * @since 3.11 */
@FunctionalInterface public interface FailableDoublePredicate<E extends Throwable> {
FALSE singleton
/** FALSE singleton */
@SuppressWarnings("rawtypes") FailableDoublePredicate FALSE = t -> false;
TRUE singleton
/** TRUE singleton */
@SuppressWarnings("rawtypes") FailableDoublePredicate TRUE = t -> true;
Returns The FALSE singleton.
Type parameters:
  • <E> – Thrown exception.
Returns:The NOP singleton.
/** * Returns The FALSE singleton. * * @param <E> Thrown exception. * @return The NOP singleton. */
static <E extends Throwable> FailableDoublePredicate<E> falsePredicate() { return FALSE; }
Returns The FALSE TRUE.
Type parameters:
  • <E> – Thrown exception.
Returns:The NOP singleton.
/** * Returns The FALSE TRUE. * * @param <E> Thrown exception. * @return The NOP singleton. */
static <E extends Throwable> FailableDoublePredicate<E> truePredicate() { return TRUE; }
Returns a composed FailableDoublePredicate like DoublePredicate.and(DoublePredicate).
Params:
  • other – a predicate that will be logically-ANDed with this predicate.
Throws:
Returns:a composed FailableDoublePredicate like DoublePredicate.and(DoublePredicate).
/** * Returns a composed {@code FailableDoublePredicate} like {@link DoublePredicate#and(DoublePredicate)}. * * @param other a predicate that will be logically-ANDed with this predicate. * @return a composed {@code FailableDoublePredicate} like {@link DoublePredicate#and(DoublePredicate)}. * @throws NullPointerException if other is null */
default FailableDoublePredicate<E> and(final FailableDoublePredicate<E> other) { Objects.requireNonNull(other); return t -> test(t) && other.test(t); }
Returns a predicate that negates this predicate.
Returns:a predicate that negates this predicate.
/** * Returns a predicate that negates this predicate. * * @return a predicate that negates this predicate. */
default FailableDoublePredicate<E> negate() { return t -> !test(t); }
Returns a composed FailableDoublePredicate like DoublePredicate.and(DoublePredicate).
Params:
  • other – a predicate that will be logically-ORed with this predicate.
Throws:
Returns:a composed FailableDoublePredicate like DoublePredicate.and(DoublePredicate).
/** * Returns a composed {@code FailableDoublePredicate} like {@link DoublePredicate#and(DoublePredicate)}. * * @param other a predicate that will be logically-ORed with this predicate. * @return a composed {@code FailableDoublePredicate} like {@link DoublePredicate#and(DoublePredicate)}. * @throws NullPointerException if other is null */
default FailableDoublePredicate<E> or(final FailableDoublePredicate<E> other) { Objects.requireNonNull(other); return t -> test(t) || other.test(t); }
Tests the predicate.
Params:
  • value – the parameter for the predicate to accept.
Throws:
  • E – Thrown when the consumer fails.
Returns:true if the input argument matches the predicate, false otherwise.
/** * Tests the predicate. * * @param value the parameter for the predicate to accept. * @return {@code true} if the input argument matches the predicate, {@code false} otherwise. * @throws E Thrown when the consumer fails. */
boolean test(double value) throws E; }