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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) 2020-2022 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;
/** A class providing static methods and objects that do useful things with type-specific iterables.
*
* @see Iterable
*/
public final class ITERABLES {
private ITERABLES() {}
/** Counts the number of elements returned by a type-specific iterable.
*
* @param iterable an iterable.
* @return the number of elements returned by {@code iterable}.
*/
public static KEY_GENERIC long size(final STD_KEY_ITERABLE KEY_GENERIC iterable) {
long c = 0;
for (@SuppressWarnings("unused") final KEY_GENERIC_TYPE dummy : iterable) c++;
return c;
}
}