/*
	* Copyright (C) 2002-2019 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 it.unimi.dsi.fastutil.chars;
import java.util.Set;
An abstract class providing basic methods for sets implementing a type-specific interface.

Note that the type-specific Set interface adds a type-specific remove() method, as it is no longer harmful for subclasses. Thus, concrete subclasses of this class must implement remove() (the rem() implementation of this class just delegates to remove()).

/** * An abstract class providing basic methods for sets implementing a * type-specific interface. * * <p> * Note that the type-specific {@link Set} interface adds a type-specific * {@code remove()} method, as it is no longer harmful for subclasses. Thus, * concrete subclasses of this class must implement {@code remove()} (the * {@code rem()} implementation of this class just delegates to * {@code remove()}). */
public abstract class AbstractCharSet extends AbstractCharCollection implements Cloneable, CharSet { protected AbstractCharSet() { } @Override public abstract CharIterator iterator(); @Override public boolean equals(final Object o) { if (o == this) return true; if (!(o instanceof Set)) return false; Set<?> s = (Set<?>) o; if (s.size() != size()) return false; return containsAll(s); }
Returns a hash code for this set. The hash code of a set is computed by summing the hash codes of its elements.
Returns:a hash code for this set.
/** * Returns a hash code for this set. * * The hash code of a set is computed by summing the hash codes of its elements. * * @return a hash code for this set. */
@Override public int hashCode() { int h = 0, n = size(); CharIterator i = iterator(); char k; while (n-- != 0) { k = i.nextChar(); // We need k because KEY2JAVAHASH() is a macro with repeated evaluation. h += (k); } return h; }
{@inheritDoc} Delegates to the type-specific rem() method implemented by type-specific abstract Collection superclass.
/** * {@inheritDoc} Delegates to the type-specific {@code rem()} method implemented * by type-specific abstract {@link java.util.Collection} superclass. */
@Override public boolean remove(char k) { return super.rem(k); }
{@inheritDoc} Delegates to the type-specific remove() method specified in the type-specific Set interface.
Deprecated:Please use remove() instead.
/** * {@inheritDoc} Delegates to the type-specific {@code remove()} method * specified in the type-specific {@link Set} interface. * * @deprecated Please use {@code remove()} instead. */
@Deprecated @Override public boolean rem(char k) { return remove(k); } }