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fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists, and queues with a small memory footprint and fast operations; it provides also big (64-bit) arrays, sets, and lists, sorting algorithms, fast, practical I/O classes for binary and text files, and facilities for memory mapping large files. This jar (fastutil-core.jar) contains data structures based on integers, longs, doubles, and objects, only; fastutil.jar contains all classes. If you have both jars in your dependencies, this jar should be excluded.
/*
* Copyright (C) 2002-2021 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.longs;
import it.unimi.dsi.fastutil.Hash;
/**
* A type-specific {@link Hash} interface.
*
* @see Hash
*/
public interface LongHash {
/**
* A type-specific hash strategy.
*
* @see it.unimi.dsi.fastutil.Hash.Strategy
*/
interface Strategy {
/**
* Returns the hash code of the specified element with respect to this hash
* strategy.
*
* @param e
* an element.
* @return the hash code of the given element with respect to this hash
* strategy.
*/
int hashCode(long e);
/**
* Returns true if the given elements are equal with respect to this hash
* strategy.
*
* @param a
* an element.
* @param b
* another element.
* @return true if the two specified elements are equal with respect to this
* hash strategy.
*/
boolean equals(long a, long b);
}
}