/*
 * Copyright (c) 2018 Goldman Sachs and others.
 * 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.collection;

import java.util.Collection;

import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function0;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.function.Function3;
import org.eclipse.collections.api.block.function.primitive.BooleanFunction;
import org.eclipse.collections.api.block.function.primitive.ByteFunction;
import org.eclipse.collections.api.block.function.primitive.CharFunction;
import org.eclipse.collections.api.block.function.primitive.DoubleFunction;
import org.eclipse.collections.api.block.function.primitive.FloatFunction;
import org.eclipse.collections.api.block.function.primitive.IntFunction;
import org.eclipse.collections.api.block.function.primitive.LongFunction;
import org.eclipse.collections.api.block.function.primitive.ShortFunction;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.collection.primitive.MutableBooleanCollection;
import org.eclipse.collections.api.collection.primitive.MutableByteCollection;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.collection.primitive.MutableDoubleCollection;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.collection.primitive.MutableIntCollection;
import org.eclipse.collections.api.collection.primitive.MutableLongCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.map.MutableMap;
import org.eclipse.collections.api.map.primitive.MutableObjectDoubleMap;
import org.eclipse.collections.api.map.primitive.MutableObjectLongMap;
import org.eclipse.collections.api.multimap.MutableMultimap;
import org.eclipse.collections.api.ordered.OrderedIterable;
import org.eclipse.collections.api.partition.PartitionMutableCollection;
import org.eclipse.collections.api.tuple.Pair;
import org.eclipse.collections.api.tuple.Twin;

MutableCollection is an interface which extends the base java.util.Collection interface and adds several internal
iterator methods, from the Smalltalk Collection protocol. These include variations of forEach, select, reject,
detect, collect, injectInto, anySatisfy, allSatisfy. These include count, remove, partition, collectIf. The API also
includes converter methods to convert a MutableCollection to a List (toList), to a sorted List (toSortedList), to a
Set (toSet), and to a Map (toMap).

There are several extensions to MutableCollection, including MutableList, MutableSet, and MutableBag.
/**
 * MutableCollection is an interface which extends the base java.util.Collection interface and adds several internal
 * iterator methods, from the Smalltalk Collection protocol. These include variations of forEach, select, reject,
 * detect, collect, injectInto, anySatisfy, allSatisfy. These include count, remove, partition, collectIf. The API also
 * includes converter methods to convert a MutableCollection to a List (toList), to a sorted List (toSortedList), to a
 * Set (toSet), and to a Map (toMap).
 * <p>
 * There are several extensions to MutableCollection, including MutableList, MutableSet, and MutableBag.
 */
public interface MutableCollection<T>
        extends Collection<T>, RichIterable<T>
{
    
This method allows mutable and fixed size collections the ability to add elements to their existing elements.
In order to support fixed size a new instance of a collection would have to be returned taking the elements of
the original collection and appending the new element to form the new collection. In the case of mutable
collections, the original collection is modified, and is returned. In order to use this method properly with
mutable and fixed size collections the following approach must be taken:

MutableCollection<String> list = list.with("1");
list = list.with("2");
return list;
 In the case of FixedSizeCollection a new instance of MutableCollection will be returned by with, and any variables that previously referenced the original collection will need to be redirected to reference the new instance. For other MutableCollection types you will replace the reference to collection with the same collection, since the instance will return "this" after calling add on itself. 
See Also:
Collection.add(Object)/**
     * This method allows mutable and fixed size collections the ability to add elements to their existing elements.
     * In order to support fixed size a new instance of a collection would have to be returned taking the elements of
     * the original collection and appending the new element to form the new collection. In the case of mutable
     * collections, the original collection is modified, and is returned. In order to use this method properly with
     * mutable and fixed size collections the following approach must be taken:
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; list = list.with("1");
     * list = list.with("2");
     * return list;
     * </pre>
     * In the case of {@link FixedSizeCollection} a new instance of MutableCollection will be returned by with, and any
     * variables that previously referenced the original collection will need to be redirected to reference the
     * new instance. For other MutableCollection types you will replace the reference to collection with the same
     * collection, since the instance will return "this" after calling add on itself.
     *
     * @see #add(Object)
     */
    MutableCollection<T> with(T element);

    
This method allows mutable and fixed size collections the ability to remove elements from their existing elements.
In order to support fixed size a new instance of a collection would have to be returned containing the elements
that would be left from the original collection after calling remove. In the case of mutable collections, the
original collection is modified, and is returned. In order to use this method properly with mutable and fixed
size collections the following approach must be taken:

MutableCollection<String> list = list.without("1");
list = list.without("2");
return list;
 In the case of FixedSizeCollection a new instance of MutableCollection will be returned by without, and any variables that previously referenced the original collection will need to be redirected to reference the new instance. For other MutableCollection types you will replace the reference to collection with the same collection, since the instance will return "this" after calling remove on itself. 
See Also:
Collection.remove(Object)/**
     * This method allows mutable and fixed size collections the ability to remove elements from their existing elements.
     * In order to support fixed size a new instance of a collection would have to be returned containing the elements
     * that would be left from the original collection after calling remove. In the case of mutable collections, the
     * original collection is modified, and is returned. In order to use this method properly with mutable and fixed
     * size collections the following approach must be taken:
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; list = list.without("1");
     * list = list.without("2");
     * return list;
     * </pre>
     * In the case of {@link FixedSizeCollection} a new instance of MutableCollection will be returned by without, and
     * any variables that previously referenced the original collection will need to be redirected to reference the
     * new instance. For other MutableCollection types you will replace the reference to collection with the same
     * collection, since the instance will return "this" after calling remove on itself.
     *
     * @see #remove(Object)
     */
    MutableCollection<T> without(T element);

    
This method allows mutable and fixed size collections the ability to add multiple elements to their existing
elements. In order to support fixed size a new instance of a collection would have to be returned taking the
elements of  the original collection and appending the new elements to form the new collection. In the case of
mutable collections, the original collection is modified, and is returned. In order to use this method properly
with mutable and fixed size collections the following approach must be taken:

MutableCollection<String> list = list.withAll(FastList.newListWith("1", "2"));
 In the case of FixedSizeCollection a new instance of MutableCollection will be returned by withAll, and any variables that previously referenced the original collection will need to be redirected to reference the new instance. For other MutableCollection types you will replace the reference to collection with the same collection, since the instance will return "this" after calling addAll on itself. 
See Also:
Collection.addAll(Collection)/**
     * This method allows mutable and fixed size collections the ability to add multiple elements to their existing
     * elements. In order to support fixed size a new instance of a collection would have to be returned taking the
     * elements of  the original collection and appending the new elements to form the new collection. In the case of
     * mutable collections, the original collection is modified, and is returned. In order to use this method properly
     * with mutable and fixed size collections the following approach must be taken:
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; list = list.withAll(FastList.newListWith("1", "2"));
     * </pre>
     * In the case of {@link FixedSizeCollection} a new instance of MutableCollection will be returned by withAll, and
     * any variables that previously referenced the original collection will need to be redirected to reference the
     * new instance. For other MutableCollection types you will replace the reference to collection with the same
     * collection, since the instance will return "this" after calling addAll on itself.
     *
     * @see #addAll(Collection)
     */
    MutableCollection<T> withAll(Iterable<? extends T> elements);

    
This method allows mutable and fixed size collections the ability to remove multiple elements from their existing
elements. In order to support fixed size a new instance of a collection would have to be returned containing the
elements that would be left from the original collection after calling removeAll. In the case of mutable
collections, the original collection is modified, and is returned. In order to use this method properly with
mutable and fixed size collections the following approach must be taken:

MutableCollection<String> list = list.withoutAll(FastList.newListWith("1", "2"));
 In the case of FixedSizeCollection a new instance of MutableCollection will be returned by withoutAll, and any variables that previously referenced the original collection will need to be redirected to reference the new instance. For other MutableCollection types you will replace the reference to collection with the same collection, since the instance will return "this" after calling removeAll on itself. 
See Also:
Collection.removeAll(Collection)/**
     * This method allows mutable and fixed size collections the ability to remove multiple elements from their existing
     * elements. In order to support fixed size a new instance of a collection would have to be returned containing the
     * elements that would be left from the original collection after calling removeAll. In the case of mutable
     * collections, the original collection is modified, and is returned. In order to use this method properly with
     * mutable and fixed size collections the following approach must be taken:
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; list = list.withoutAll(FastList.newListWith("1", "2"));
     * </pre>
     * In the case of {@link FixedSizeCollection} a new instance of MutableCollection will be returned by withoutAll,
     * and any variables that previously referenced the original collection will need to be redirected to reference the
     * new instance. For other MutableCollection types you will replace the reference to collection with the same
     * collection, since the instance will return "this" after calling removeAll on itself.
     *
     * @see #removeAll(Collection)
     */
    MutableCollection<T> withoutAll(Iterable<? extends T> elements);

    
Creates a new empty mutable version of the same collection type. For example, if this instance is a FastList,
this method will return a new empty FastList. If the class of this instance is immutable or fixed size (i.e.
SingletonList) then a mutable alternative to the class will be provided.
/**
     * Creates a new empty mutable version of the same collection type. For example, if this instance is a FastList,
     * this method will return a new empty FastList. If the class of this instance is immutable or fixed size (i.e.
     * SingletonList) then a mutable alternative to the class will be provided.
     */
    MutableCollection<T> newEmpty();

    @Override
    MutableCollection<T> tap(Procedure<? super T> procedure);

    
Returns a MutableCollection with all elements that evaluate to true for the specified predicate.

MutableCollection<Integer> livesInLondon =
    people.select(person -> person.getAddress().getCity().equals("London"));

/**
     * Returns a MutableCollection with all elements that evaluate to true for the specified predicate.
     * <p>
     * <pre>
     * MutableCollection&lt;Integer&gt; livesInLondon =
     *     people.select(person -&gt; person.getAddress().getCity().equals("London"));
     * </pre>
     */
    @Override
    MutableCollection<T> select(Predicate<? super T> predicate);

    
Returns a MutableCollection with all elements that evaluate to true for the specified predicate2 and parameter.

MutableCollection<Integer> fives =
    integers.selectWith(Predicates2.equal(), Integer.valueOf(5));

/**
     * Returns a MutableCollection with all elements that evaluate to true for the specified predicate2 and parameter.
     * <p>
     * <pre>
     * MutableCollection&lt;Integer&gt; fives =
     *     integers.selectWith(Predicates2.equal(), Integer.valueOf(5));
     * </pre>
     */
    @Override
    <P> MutableCollection<T> selectWith(Predicate2<? super T, ? super P> predicate, P parameter);

    
Returns a MutableCollection with all elements that evaluate to false for the specified predicate.

MutableCollection<Person> notSmiths =
    people.reject(person -> person.person.getLastName().equals("Smith"));
 Using the Predicates factory: 

MutableCollection<Person> notSmiths = people.reject(Predicates.attributeEqual("lastName", "Smith"));

/**
     * Returns a MutableCollection with all elements that evaluate to false for the specified predicate.
     * <p>
     * <pre>
     * MutableCollection&lt;Person&gt; notSmiths =
     *     people.reject(person -&gt; person.person.getLastName().equals("Smith"));
     * </pre>
     * Using the {@code Predicates} factory:
     * <p>
     * <pre>
     * MutableCollection&lt;Person&gt; notSmiths = people.reject(Predicates.attributeEqual("lastName", "Smith"));
     * </pre>
     */
    @Override
    MutableCollection<T> reject(Predicate<? super T> predicate);

    
Returns a MutableCollection with all elements that evaluate to false for the specified predicate2 and parameter.

e.g.
MutableCollection<Integer> selected =
    integers.rejectWith(Predicates2.equal(), Integer.valueOf(5));

/**
     * Returns a MutableCollection with all elements that evaluate to false for the specified predicate2 and parameter.
     * <p>
     * <pre>e.g.
     * MutableCollection&lt;Integer&gt; selected =
     *     integers.rejectWith(Predicates2.equal(), Integer.valueOf(5));
     * </pre>
     */
    @Override
    <P> MutableCollection<T> rejectWith(Predicate2<? super T, ? super P> predicate, P parameter);

    
Filters a collection into two separate collections based on a predicate returned via a Pair.

e.g.
return lastNames.selectAndRejectWith(Predicates2.lessThan(), "Mason");

Deprecated:
since 6.0 use RichIterable.partitionWith(Predicate2, Object) instead./**
     * Filters a collection into two separate collections based on a predicate returned via a Pair.
     * <p>
     * <pre>e.g.
     * return lastNames.<b>selectAndRejectWith</b>(Predicates2.lessThan(), "Mason");
     * </pre>
     *
     * @deprecated since 6.0 use {@link RichIterable#partitionWith(Predicate2, Object)} instead.
     */
    @Deprecated
    <P> Twin<MutableList<T>> selectAndRejectWith(Predicate2<? super T, ? super P> predicate, P parameter);

    
{@inheritDoc}
Co-variant example for MutableCollection:
PartitionMutableCollection<Person> newYorkersAndNonNewYorkers =
    people.partition(person -> person.getAddress().getState().getName().equals("New York"));

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * PartitionMutableCollection&lt;Person&gt; newYorkersAndNonNewYorkers =
     *     people.partition(person -&gt; person.getAddress().getState().getName().equals("New York"));
     * </pre>
     */
    @Override
    PartitionMutableCollection<T> partition(Predicate<? super T> predicate);

    
{@inheritDoc}
Co-variant example for MutableCollection:
PartitionMutableCollection<Person> newYorkersAndNonNewYorkers =
    people.partitionWith((Person person, String state) -> person.getAddress().getState().getName().equals(state), "New York");

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * PartitionMutableCollection&lt;Person&gt; newYorkersAndNonNewYorkers =
     *     people.partitionWith((Person person, String state) -&gt; person.getAddress().getState().getName().equals(state), "New York");
     * </pre>
     */
    @Override
    <P> PartitionMutableCollection<T> partitionWith(Predicate2<? super T, ? super P> predicate, P parameter);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableCollection<Integer> integers =
    List.mutable.with(new Integer(0), new Long(0L), new Double(0.0)).selectInstancesOf(Integer.class);

Since:
2.0/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableCollection&lt;Integer&gt; integers =
     *     List.mutable.with(new Integer(0), new Long(0L), new Double(0.0)).selectInstancesOf(Integer.class);
     * </pre>
     *
     * @since 2.0
     */
    @Override
    <S> MutableCollection<S> selectInstancesOf(Class<S> clazz);

    
Removes all elements in the collection that evaluate to true for the specified predicate.

e.g.
return lastNames.removeIf(Predicates.isNull());

/**
     * Removes all elements in the collection that evaluate to true for the specified predicate.
     * <p>
     * <pre>e.g.
     * return lastNames.<b>removeIf</b>(Predicates.isNull());
     * </pre>
     */
    boolean removeIf(Predicate<? super T> predicate);

    
Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.

return lastNames.removeIfWith(Predicates2.isNull(), null);

/**
     * Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.
     * <p>
     * <pre>
     * return lastNames.<b>removeIfWith</b>(Predicates2.isNull(), null);
     * </pre>
     */
    <P> boolean removeIfWith(Predicate2<? super T, ? super P> predicate, P parameter);

    
Returns a new MutableCollection with the results of applying the specified function to each element of the source
collection.

MutableCollection<String> names =
    people.collect(person -> person.getFirstName() + " " + person.getLastName());

/**
     * Returns a new MutableCollection with the results of applying the specified function to each element of the source
     * collection.
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; names =
     *     people.collect(person -&gt; person.getFirstName() + " " + person.getLastName());
     * </pre>
     */
    @Override
    <V> MutableCollection<V> collect(Function<? super T, ? extends V> function);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableBooleanCollection licenses =
    people.collectBoolean(person -> person.hasDrivingLicense());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableBooleanCollection licenses =
     *     people.collectBoolean(person -&gt; person.hasDrivingLicense());
     * </pre>
     */
    @Override
    MutableBooleanCollection collectBoolean(BooleanFunction<? super T> booleanFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableByteCollection bytes =
    people.collectByte(person -> person.getCode());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableByteCollection bytes =
     *     people.collectByte(person -&gt; person.getCode());
     * </pre>
     */
    @Override
    MutableByteCollection collectByte(ByteFunction<? super T> byteFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableCharCollection chars =
    people.collectChar(person -> person.getMiddleInitial());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableCharCollection chars =
     *     people.collectChar(person -&gt; person.getMiddleInitial());
     * </pre>
     */
    @Override
    MutableCharCollection collectChar(CharFunction<? super T> charFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableDoubleCollection doubles =
    people.collectDouble(person -> person.getMilesFromNorthPole());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableDoubleCollection doubles =
     *     people.collectDouble(person -&gt; person.getMilesFromNorthPole());
     * </pre>
     */
    @Override
    MutableDoubleCollection collectDouble(DoubleFunction<? super T> doubleFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableFloatCollection floats =
    people.collectFloat(person -> person.getHeightInInches());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableFloatCollection floats =
     *     people.collectFloat(person -&gt; person.getHeightInInches());
     * </pre>
     */
    @Override
    MutableFloatCollection collectFloat(FloatFunction<? super T> floatFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableIntCollection ints =
    people.collectInt(person -> person.getAge());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableIntCollection ints =
     *     people.collectInt(person -&gt; person.getAge());
     * </pre>
     */
    @Override
    MutableIntCollection collectInt(IntFunction<? super T> intFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableLongCollection longs =
    people.collectLong(person -> person.getGuid());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableLongCollection longs =
     *     people.collectLong(person -&gt; person.getGuid());
     * </pre>
     */
    @Override
    MutableLongCollection collectLong(LongFunction<? super T> longFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableShortCollection shorts =
    people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth());

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableShortCollection shorts =
     *     people.collectShort(person -&gt; person.getNumberOfJunkMailItemsReceivedPerMonth());
     * </pre>
     */
    @Override
    MutableShortCollection collectShort(ShortFunction<? super T> shortFunction);

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableCollection<Integer> integers =
    Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1));


/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableCollection&lt;Integer&gt; integers =
     *     Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -&gt; each + parameter, Integer.valueOf(1));
     * </pre>
     * <p>
     */
    @Override
    <P, V> MutableCollection<V> collectWith(Function2<? super T, ? super P, ? extends V> function, P parameter);

    
Returns a new MutableCollection with the results of applying the specified function to each element of the source
collection, but only for elements that evaluate to true for the specified predicate.

MutableCollection<String> collected =
    Lists.mutable.of().with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString())

/**
     * Returns a new MutableCollection with the results of applying the specified function to each element of the source
     * collection, but only for elements that evaluate to true for the specified predicate.
     * <p>
     * <pre>
     * MutableCollection&lt;String&gt; collected =
     *     Lists.mutable.of().with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString())
     * </pre>
     */
    @Override
    <V> MutableCollection<V> collectIf(Predicate<? super T> predicate, Function<? super T, ? extends V> function);

    
{@inheritDoc}
Co-variant example for MutableCollection:
Function<Person, List<Address>> addressFunction = Person::getAddresses;
MutableCollection<Person> people = ...;
MutableCollection<List<Address>> addresses = people.collect(addressFunction);
MutableCollection<Address> addresses = people.flatCollect(addressFunction);

Params:
function – The Function to apply
Returns:
a new flattened collection produced by applying the given function
Since:
1.0/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * Function&lt;Person, List&lt;Address&gt;&gt; addressFunction = Person::getAddresses;
     * MutableCollection&lt;Person&gt; people = ...;
     * MutableCollection&lt;List&lt;Address&gt;&gt; addresses = people.collect(addressFunction);
     * MutableCollection&lt;Address&gt; addresses = people.flatCollect(addressFunction);
     * </pre>
     *
     * @param function The {@link Function} to apply
     * @return a new flattened collection produced by applying the given {@code function}
     * @since 1.0
     */
    @Override
    <V> MutableCollection<V> flatCollect(Function<? super T, ? extends Iterable<V>> function);

    
Since:
9.2/**
     * @since 9.2
     */
    @Override
    default <P, V> MutableCollection<V> flatCollectWith(Function2<? super T, ? super P, ? extends Iterable<V>> function, P parameter)
    {
        return this.flatCollect(each -> function.apply(each, parameter));
    }

    <IV, P> IV injectIntoWith(
            IV injectValue,
            Function3<? super IV, ? super T, ? super P, ? extends IV> function,
            P parameter);

    
Returns an unmodifiable view of this collection. This is the equivalent of using Collections.unmodifiableCollection(this) with a return type that supports the full iteration protocols available on MutableCollection. Methods which would mutate the underlying collection will throw UnsupportedOperationExceptions. 
See Also:
Collections.unmodifiableCollection(Collection<? extends Object>)
Returns:
an unmodifiable view of this collection.
Since:
1.0/**
     * Returns an unmodifiable view of this collection. This is the equivalent of using
     * {@code Collections.unmodifiableCollection(this)} with a return type that supports the full
     * iteration protocols available on {@code MutableCollection}. Methods which would
     * mutate the underlying collection will throw UnsupportedOperationExceptions.
     *
     * @return an unmodifiable view of this collection.
     * @see java.util.Collections#unmodifiableCollection(Collection)
     * @since 1.0
     */
    MutableCollection<T> asUnmodifiable();

    
Returns a synchronized wrapper backed by this collection. This is the equivalent of using Collections.synchronizedCollection(this) only with a return type that supports the full iteration protocols available on MutableCollection. The preferred way of iterating over a synchronized collection is to use the internal iteration methods which are properly synchronized internally. 
 MutableCollection synchedCollection = collection.asSynchronized();
    ...
 synchedCollection.forEach(each -> ... );
 synchedCollection.select(each -> ... );
 synchedCollection.collect(each -> ... );

If you want to iterate using an imperative style, you must protect external iterators using
a synchronized block. This includes explicit iterators as well as JDK 5 style for loops.

See Also:
Collections.synchronizedCollection(Collection<Object>)
Returns:
a synchronized view of this collection.
Since:
1.0/**
     * Returns a synchronized wrapper backed by this collection. This is the equivalent of using
     * {@code Collections.synchronizedCollection(this)} only with a return type that supports the full
     * iteration protocols available on {@code MutableCollection}.
     *
     * The preferred way of iterating over a synchronized collection is to use the internal iteration
     * methods which are properly synchronized internally.
     *
     * <pre>
     *  MutableCollection synchedCollection = collection.asSynchronized();
     *     ...
     *  synchedCollection.forEach(each -&gt; ... );
     *  synchedCollection.select(each -&gt; ... );
     *  synchedCollection.collect(each -&gt; ... );
     * </pre>
     *
     * If you want to iterate using an imperative style, you must protect external iterators using
     * a synchronized block. This includes explicit iterators as well as JDK 5 style for loops.
     * <p>
     *
     * @return a synchronized view of this collection.
     * @see java.util.Collections#synchronizedCollection(Collection)
     * @since 1.0
     */
    MutableCollection<T> asSynchronized();

    
Converts this MutableCollection to an ImmutableCollection. 
Since:
1.0/**
     * Converts this {@code MutableCollection} to an {@code ImmutableCollection}.
     *
     * @since 1.0
     */
    ImmutableCollection<T> toImmutable();

    @Override
    <V> MutableObjectLongMap<V> sumByInt(Function<? super T, ? extends V> groupBy, IntFunction<? super T> function);

    @Override
    <V> MutableObjectDoubleMap<V> sumByFloat(Function<? super T, ? extends V> groupBy, FloatFunction<? super T> function);

    @Override
    <V> MutableObjectLongMap<V> sumByLong(Function<? super T, ? extends V> groupBy, LongFunction<? super T> function);

    @Override
    <V> MutableObjectDoubleMap<V> sumByDouble(Function<? super T, ? extends V> groupBy, DoubleFunction<? super T> function);

    
Since:
9.0/**
     * @since 9.0
     */
    @Override
    default <V> MutableBag<V> countBy(Function<? super T, ? extends V> function)
    {
        return this.asLazy().<V>collect(function).toBag();
    }

    
Since:
9.0/**
     * @since 9.0
     */
    @Override
    default <V, P> MutableBag<V> countByWith(Function2<? super T, ? super P, ? extends V> function, P parameter)
    {
        return this.asLazy().<P, V>collectWith(function, parameter).toBag();
    }

    
Since:
10.0.0/**
     * @since 10.0.0
     */
    @Override
    default <V> MutableBag<V> countByEach(Function<? super T, ? extends Iterable<V>> function)
    {
        return this.asLazy().flatCollect(function).toBag();
    }

    
{@inheritDoc}
Co-variant example for MutableCollection:
MutableMultimap<String, Person> peopleByLastName =
    people.groupBy(Person::getLastName);

/**
     * {@inheritDoc}
     * Co-variant example for MutableCollection:
     * <pre>
     * MutableMultimap&lt;String, Person&gt; peopleByLastName =
     *     people.groupBy(Person::getLastName);
     * </pre>
     */
    @Override
    <V> MutableMultimap<V, T> groupBy(Function<? super T, ? extends V> function);

    @Override
    <V> MutableMultimap<V, T> groupByEach(Function<? super T, ? extends Iterable<V>> function);

    @Override
    <V> MutableMap<V, T> groupByUniqueKey(Function<? super T, ? extends V> function);

    
Deprecated:
in 6.0. Use OrderedIterable.zip(Iterable) instead./**
     * @deprecated in 6.0. Use {@link OrderedIterable#zip(Iterable)} instead.
     */
    @Override
    @Deprecated
    <S> MutableCollection<Pair<T, S>> zip(Iterable<S> that);

    
Deprecated:
in 6.0. Use OrderedIterable.zipWithIndex() instead./**
     * @deprecated in 6.0. Use {@link OrderedIterable#zipWithIndex()} instead.
     */
    @Override
    @Deprecated
    MutableCollection<Pair<T, Integer>> zipWithIndex();

    
See Also:
addAll(Collection)
Since:
1.0/**
     * @see #addAll(Collection)
     * @since 1.0
     */
    boolean addAllIterable(Iterable<? extends T> iterable);

    
See Also:
removeAll(Collection)
Since:
1.0/**
     * @see #removeAll(Collection)
     * @since 1.0
     */
    boolean removeAllIterable(Iterable<?> iterable);

    
See Also:
retainAll(Collection)
Since:
1.0/**
     * @see #retainAll(Collection)
     * @since 1.0
     */
    boolean retainAllIterable(Iterable<?> iterable);

    @Override
    <K, V> MutableMap<K, V> aggregateInPlaceBy(
            Function<? super T, ? extends K> groupBy,
            Function0<? extends V> zeroValueFactory,
            Procedure2<? super V, ? super T> mutatingAggregator);

    @Override
    <K, V> MutableMap<K, V> aggregateBy(
            Function<? super T, ? extends K> groupBy,
            Function0<? extends V> zeroValueFactory,
            Function2<? super V, ? super T, ? extends V> nonMutatingAggregator);
}