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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

/**
 * Represents an object that can be stored in a hashtable.
 */
[scriptable, uuid(17e595fa-b57a-4933-bd0f-b1812e8ab188)]
interface nsIHashable : nsISupports
{
  /**
   * Is this object the equivalent of the other object?
   */
  boolean equals(in nsIHashable aOther);

  /**
   * A generated hashcode for this object. Objects that are equivalent
   * must have the same hash code. Getting this property should never
   * throw an exception!
   */
  readonly attribute unsigned long hashCode;
};