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fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists and priority queues with a small memory footprint and fast access and insertion; provides also big (64-bit) arrays, sets and lists, and fast, practical I/O classes for binary and text files.
/*
* Copyright (C) 2002-2017 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.Iterator;
/** A type-specific {@link Iterator}; provides an additional method to avoid (un)boxing, and
* the possibility to skip elements.
*
* @see Iterator
*/
public interface KEY_ITERATOR KEY_GENERIC extends Iterator {
#if KEYS_PRIMITIVE
/**
* Returns the next element as a primitive type.
*
* @return the next element in the iteration.
* @see Iterator#next()
*/
KEY_TYPE NEXT_KEY();
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
KEY_CLASS next();
#endif
/** Skips the given number of elements.
*
* The effect of this call is exactly the same as that of
* calling {@link #next()} for n times (possibly stopping
* if {@link #hasNext()} becomes false).
*
* @param n the number of elements to skip.
* @return the number of elements actually skipped.
* @see Iterator#next()
*/
int skip(int n);
}