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.partition.set;

import org.eclipse.collections.api.partition.PartitionIterable;
import org.eclipse.collections.api.set.SetIterable;


A PartitionSet is the result of splitting a SetIterable into two SetIterables based on a Predicate.  The results that
answer true for the Predicate will be returned from the getSelected() method and the results that answer
false for the predicate will be returned from the getRejected() method.

/**
 * A PartitionSet is the result of splitting a SetIterable into two SetIterables based on a Predicate.  The results that
 * answer true for the Predicate will be returned from the getSelected() method and the results that answer
 * false for the predicate will be returned from the getRejected() method.
 */
public interface PartitionSet<T> extends PartitionIterable<T>
{
    @Override
    SetIterable<T> getSelected();

    @Override
    SetIterable<T> getRejected();
}