SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package net.multiphasicapps.collections;

import java.util.Collection;
import java.util.HashSet;

/**
 * This is a set which uses the identity of objects for comparison rather than
 * the actual equality of said objects.
 *
 * @param <T> The type of element to store in the set.
 * @since 2017/12/28
 */
public final class IdentityHashSet<T>
    extends __IdentityBaseSet__<T>
{
    /**
     * Initializes an empty set.
     *
     * @since 2017/12/28
     */
    public IdentityHashSet()
    {
        super(new HashSet<Identity<T>>());
    }
    
    /**
     * Initializes a set copied from the other collection.
     *
     * @param __from The collection to copy values from.
     * @throws NullPointerException On null arguments.
     * @since 2017/12/28
     */
    public IdentityHashSet(Collection<? extends T> __from)
        throws NullPointerException
    {
        super(new HashSet<Identity<T>>(), __from);
    }
}