https://github.com/eclipse/eclipse-collections/eclipse-collections-api: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
/*
 * Copyright (c) 2016 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.api.block.function;

import java.io.Serializable;
import java.util.function.BiFunction;


A Function2 is used by injectInto() methods. It takes the injected argument as the first argument, and the
current item of the collection as the second argument, for the first item in the collection.  The result of each
subsequent iteration is passed in as the first argument.

Since:1.0
/**
 * A Function2 is used by injectInto() methods. It takes the injected argument as the first argument, and the
 * current item of the collection as the second argument, for the first item in the collection.  The result of each
 * subsequent iteration is passed in as the first argument.
 *
 * @since 1.0
 */
@FunctionalInterface
public interface Function2<T1, T2, R>
        extends BiFunction<T1, T2, R>, Serializable
{
    R value(T1 argument1, T2 argument2);

    @Override
    default R apply(T1 argument1, T2 argument2)
    {
        return this.value(argument1, argument2);
    }
}