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Functional Programming for Java 8+ and compatible with the modular system of Java 9+.

There is a newer version: 0.5.10

/*
 * Copyright (C) 2021 iofairy, 
 *
 * Licensed 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 com.iofairy.lambda;

/**
 * A Lambda will produce a result.
 * @since 0.0.1
 */
public interface LambdaR extends Lambda{
    /**
     * Indicates whether the Lambda's return value is void
     * @return return {@code true} if the Lambda's return value is void
     */
    default boolean isVoid(){
        return false;
    }
}