/*		 
 * Copyright (C) 2002-2013 Sebastiano Vigna 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */


package PACKAGE;

import java.util.Set;

/** A type-specific {@link Set}; provides some additional methods that use polymorphism to avoid (un)boxing. 
 *
 * <P>Additionally, this interface strengthens (again) {@link #iterator()}.
 *
 * @see Set
 */

public interface SET KEY_GENERIC extends COLLECTION KEY_GENERIC, Set<KEY_GENERIC_CLASS> {

	/** Returns a type-specific iterator on the elements of this set.
	 *
	 * <p>Note that this specification strengthens the one given in {@link java.lang.Iterable#iterator()},
	 * which was already strengthened in the corresponding type-specific class,
	 * but was weakened by the fact that this interface extends {@link Set}.
	 *
	 * @return a type-specific iterator on the elements of this set.
	 */
	KEY_ITERATOR KEY_GENERIC iterator();

	/** Removes an element from this set.
	 *
	 * <p>Note that the corresponding method of the type-specific collection is <code>rem()</code>.
	 * This unfortunate situation is caused by the clash
	 * with the similarly named index-based method in the {@link java.util.List} interface.
	 *
	 * @see java.util.Collection#remove(Object)
	 */
	public boolean remove( KEY_TYPE k );
}
