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/*
 * Copyright (c) 2016 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.api.bag.primitive;

import org.eclipse.collections.api.DoubleIterable;
import org.eclipse.collections.api.bag.Bag;
import org.eclipse.collections.api.block.function.primitive.DoubleToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.IntPredicate;
import org.eclipse.collections.api.block.predicate.primitive.DoublePredicate;
import org.eclipse.collections.api.block.procedure.primitive.DoubleIntProcedure;
import org.eclipse.collections.api.list.ListIterable;
import org.eclipse.collections.api.tuple.primitive.DoubleIntPair;

/**
 * This file was automatically generated from template file primitiveBag.stg.
 *
 * @since 3.0.
 */
public interface DoubleBag extends DoubleIterable
{
    /**
     * The size of the Bag when counting only distinct elements.
     */
    int sizeDistinct();

    /**
     * Returns all elements of the bag that have a number of occurrences that satisfy the predicate.
     *
     * @since 8.0
     */
    DoubleBag selectByOccurrences(IntPredicate predicate);

    /**
     * Returns the {@code count} most frequently occurring items.
     *
     * In the event of a tie, all of the items with the number of occurrences that match the occurrences of the last
     * item will be returned.
     *
     * @since 8.0
     */
    ListIterable topOccurrences(int count);

    /**
     * Returns the {@code count} least frequently occurring items.
     *
     * In the event of a tie, all of the items with the number of occurrences that match the occurrences of the last
     * item will be returned.
     *
     * @since 8.0
     */
    ListIterable bottomOccurrences(int count);

    /**
     * The occurrences of a distinct item in the bag.
     */
    int occurrencesOf(double item);

    /**
     * For each distinct item, with the number of occurrences, execute the specified procedure.
     */
    void forEachWithOccurrences(DoubleIntProcedure procedure);

    DoubleBag select(DoublePredicate predicate);

    DoubleBag reject(DoublePredicate predicate);

     Bag collect(DoubleToObjectFunction function);

    /**
     * Follows the same general contract as {@link Bag#equals(Object)}.
     */
    @Override
    boolean equals(Object o);

    /**
     * Follows the same general contract as {@link Bag#hashCode()}.
     */
    @Override
    int hashCode();

    /**
     * Returns an immutable copy of this bag. If the bag is immutable, it returns itself.
     */
    ImmutableDoubleBag toImmutable();
}