juneau-core/juneau-marshall/src/main/java/org/apache/juneau/internal/Function2.java

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package org.apache.juneau.internal;

import java.util.*;
import java.util.function.*;

/**
 * A function that takes in 2 arguments.
 *
 * <h5 class='section'>See Also:</h5><ul>
 * </ul>
 *
 * @param <A> The first argument.
 * @param <B> The second argument.
 * @param <R> The return type.
 */
@SuppressWarnings("javadoc")
@FunctionalInterface
public interface Function2<A,B,R> {

	R apply(A a, B b);

	default <V> Function2<A, B, V> andThen(Function<? super R, ? extends V> after) {
		Objects.requireNonNull(after);
		return (A a, B b) -> after.apply(apply(a, b));
	}
}