https://github.com/ReactiveX/RxJava: Reactive Extensions for Java
  • David Karnok 
Copyright (c) 2016-present, RxJava Contributors.
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.

/**
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * 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 io.reactivex.functions;

import io.reactivex.annotations.NonNull;


A functional interface (callback) that computes a value based on multiple input values.

Type parameters:
  • <T1> – the first value type
  • <T2> – the second value type
  • <T3> – the third value type
  • <T4> – the fourth value type
  • <T5> – the fifth value type
  • <T6> – the sixth value type
  • <T7> – the seventh value type
  • <T8> – the eighth value type
  • <R> – the result type
/**
 * A functional interface (callback) that computes a value based on multiple input values.
 * @param <T1> the first value type
 * @param <T2> the second value type
 * @param <T3> the third value type
 * @param <T4> the fourth value type
 * @param <T5> the fifth value type
 * @param <T6> the sixth value type
 * @param <T7> the seventh value type
 * @param <T8> the eighth value type
 * @param <R> the result type
 */
public interface Function8<T1, T2, T3, T4, T5, T6, T7, T8, R> {
    
Calculate a value based on the input values.

Params:
  • t1 – the first value
  • t2 – the second value
  • t3 – the third value
  • t4 – the fourth value
  • t5 – the fifth value
  • t6 – the sixth value
  • t7 – the seventh value
  • t8 – the eighth value
Throws:
Returns:the result value
/**
     * Calculate a value based on the input values.
     * @param t1 the first value
     * @param t2 the second value
     * @param t3 the third value
     * @param t4 the fourth value
     * @param t5 the fifth value
     * @param t6 the sixth value
     * @param t7 the seventh value
     * @param t8 the eighth value
     * @return the result value
     * @throws Exception on error
     */
    @NonNull
    R apply(@NonNull T1 t1, @NonNull T2 t2, @NonNull T3 t3, @NonNull T4 t4, @NonNull T5 t5, @NonNull T6 t6, @NonNull T7 t7, @NonNull T8 t8) throws Exception;
}