MutableBag (Goldman Sachs Collections API

All Superinterfaces:

Bag<T>, java.util.Collection<T>, InternalIterable<T>, java.lang.Iterable<T>, MutableCollection<T>, RichIterable<T>, UnsortedBag<T>
```
public interface MutableBag<T>
extends UnsortedBag<T>, MutableCollection<T>
```
A MutableBag is a Collection whose elements are unordered and may contain duplicate entries. It varies from MutableCollection in that it adds a protocol for determining, adding, and removing the number of occurrences for an item.

Since:

1.0

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addOccurrences(T item, int occurrences)`
`MutableBag<T>`	`asSynchronized()` Returns a synchronized (thread-safe) collection backed by this collection.
`MutableBag<T>`	`asUnmodifiable()` Returns an unmodifiable view of this collection.
`<V> MutableBag<V>`	`collect(Function<? super T,? extends V> function)` Returns a new collection with the results of applying the specified function on each element of the source collection.
`MutableBooleanBag`	`collectBoolean(BooleanFunction<? super T> booleanFunction)` Returns a new primitive `boolean` iterable with the results of applying the specified function on each element of the source collection.
`MutableByteBag`	`collectByte(ByteFunction<? super T> byteFunction)` Returns a new primitive `byte` iterable with the results of applying the specified function on each element of the source collection.
`MutableCharBag`	`collectChar(CharFunction<? super T> charFunction)` Returns a new primitive `char` iterable with the results of applying the specified function on each element of the source collection.
`MutableDoubleBag`	`collectDouble(DoubleFunction<? super T> doubleFunction)` Returns a new primitive `double` iterable with the results of applying the specified function on each element of the source collection.
`MutableFloatBag`	`collectFloat(FloatFunction<? super T> floatFunction)` Returns a new primitive `float` iterable with the results of applying the specified function on each element of the source collection.
`<V> MutableBag<V>`	`collectIf(Predicate<? super T> predicate, Function<? super T,? extends V> function)` Returns a new collection with the results of applying the specified function on each element of the source collection, but only for those elements which return true upon evaluation of the predicate.
`MutableIntBag`	`collectInt(IntFunction<? super T> intFunction)` Returns a new primitive `int` iterable with the results of applying the specified function on each element of the source collection.
`MutableLongBag`	`collectLong(LongFunction<? super T> longFunction)` Returns a new primitive `long` iterable with the results of applying the specified function on each element of the source collection.
`MutableShortBag`	`collectShort(ShortFunction<? super T> shortFunction)` Returns a new primitive `short` iterable with the results of applying the specified function on each element of the source collection.
`<P,V> MutableBag<V>`	`collectWith(Function2<? super T,? super P,? extends V> function, P parameter)` Same as collect with a `Function2` and specified parameter which is passed to the block
`<V> MutableBag<V>`	`flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)` `flatCollect` is a special case of `RichIterable.collect(Function)`.
`<V> MutableBagMultimap<V,T>`	`groupBy(Function<? super T,? extends V> function)` For each element of the iterable, the function is evaluated and the results of these evaluations are collected into a new multimap, where the transformed value is the key and the original values are added to the same (or similar) species of collection as the source iterable.
`<V> MutableBagMultimap<V,T>`	`groupByEach(Function<? super T,? extends java.lang.Iterable<V>> function)` Similar to `RichIterable.groupBy(Function)`, except the result of evaluating function will return a collection of keys for each value.
`MutableBag<T>`	`newEmpty()` Creates a new empty mutable version of the same collection type.
`PartitionMutableBag<T>`	`partition(Predicate<? super T> predicate)` Filters a collection into a PartitionedIterable based on the evaluation of the predicate.
`<P> PartitionMutableBag<T>`	`partitionWith(Predicate2<? super T,? super P> predicate, P parameter)` Filters a collection into a PartitionIterable based on the evaluation of the predicate.
`MutableBag<T>`	`reject(Predicate<? super T> predicate)` Returns all elements of the source collection that return false when evaluating of the predicate.
`<P> MutableBag<T>`	`rejectWith(Predicate2<? super T,? super P> predicate, P parameter)` Similar to `RichIterable.reject(Predicate)`, except with an evaluation parameter for the second generic argument in `Predicate2`.
`boolean`	`removeOccurrences(java.lang.Object item, int occurrences)`
`MutableBag<T>`	`select(Predicate<? super T> predicate)` Returns all elements of the source collection that return true when evaluating the predicate.
`MutableBag<T>`	`selectByOccurrences(IntPredicate predicate)` Returns all elements of the bag that have a number of occurrences that satisfy the predicate.
`<S> MutableBag<S>`	`selectInstancesOf(java.lang.Class<S> clazz)` Returns all elements of the source collection that are instances of the Class `clazz`.
`<P> MutableBag<T>`	`selectWith(Predicate2<? super T,? super P> predicate, P parameter)` Similar to `RichIterable.select(Predicate)`, except with an evaluation parameter for the second generic argument in `Predicate2`.
`boolean`	`setOccurrences(T item, int occurrences)`
`MutableBag<T>`	`with(T element)` This method allows mutable and fixed size collections the ability to add elements to their existing elements.
`MutableBag<T>`	`withAll(java.lang.Iterable<? extends T> elements)` This method allows mutable and fixed size collections the ability to add multiple elements to their existing elements.
`MutableBag<T>`	`without(T element)` This method allows mutable and fixed size collections the ability to remove elements from their existing elements.
`MutableBag<T>`	`withoutAll(java.lang.Iterable<? extends T> elements)` This method allows mutable and fixed size collections the ability to remove multiple elements from their existing elements.
`<S> MutableBag<Pair<T,S>>`	`zip(java.lang.Iterable<S> that)` Returns a `RichIterable` formed from this `RichIterable` and another `RichIterable` by combining corresponding elements in pairs.
`MutableSet<Pair<T,java.lang.Integer>>`	`zipWithIndex()` Zips this `RichIterable` with its indices.

Methods inherited from interface com.gs.collections.api.bag.UnsortedBag
toImmutable

Methods inherited from interface com.gs.collections.api.bag.Bag
equals, forEachWithOccurrences, hashCode, occurrencesOf, sizeDistinct, toMapOfItemToCount, toStringOfItemToCount

Methods inherited from interface com.gs.collections.api.RichIterable
aggregateBy, aggregateInPlaceBy, allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, appendString, asLazy, chunk, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, count, countWith, detect, detectIfNone, detectWith, detectWithIfNone, flatCollect, getFirst, getLast, groupBy, groupByEach, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, isEmpty, makeString, makeString, makeString, max, max, maxBy, min, min, minBy, noneSatisfy, noneSatisfyWith, notEmpty, reject, rejectWith, select, selectWith, size, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toList, toMap, toSet, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedSet, toSortedSet, toSortedSetBy, toString, zip, zipWithIndex

Methods inherited from interface com.gs.collections.api.InternalIterable
forEach, forEachWith, forEachWithIndex

Methods inherited from interface java.lang.Iterable
iterator

Methods inherited from interface com.gs.collections.api.collection.MutableCollection
addAllIterable, aggregateBy, aggregateInPlaceBy, groupByUniqueKey, injectIntoWith, removeAllIterable, removeIf, removeIfWith, retainAllIterable, selectAndRejectWith, toImmutable

Methods inherited from interface java.util.Collection
add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

- Method Detail
  - selectByOccurrences
```
MutableBag<T> selectByOccurrences(IntPredicate predicate)
```
    Description copied from interface: Bag
    
    Returns all elements of the bag that have a number of occurrences that satisfy the predicate.
    
    Specified by:
    
    selectByOccurrences in interface Bag<T>
    
    Specified by:
    
    selectByOccurrences in interface UnsortedBag<T>
  - with
```
MutableBag<T> with(T element)
```
    Description copied from interface: MutableCollection
    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 list;
 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.
    Specified by:
    
    with in interface MutableCollection<T>
    
    See Also:
    Collection.add(Object)
  - without
```
MutableBag<T> without(T element)
```
    Description copied from interface: MutableCollection
    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 contaning 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 list;
 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.
    Specified by:
    
    without in interface MutableCollection<T>
    
    See Also:
    Collection.remove(Object)
  - withAll
```
MutableBag<T> withAll(java.lang.Iterable<? extends T> elements)
```
    Description copied from interface: MutableCollection
    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 list;
 list = list.withAll(FastList.newListWith("1", "2"));
 return list;
 
```
    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.
    Specified by:
    
    withAll in interface MutableCollection<T>
    
    See Also:
    Collection.addAll(Collection)
  - withoutAll
```
MutableBag<T> withoutAll(java.lang.Iterable<? extends T> elements)
```
    Description copied from interface: MutableCollection
    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 contaning 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 list;
 list = list.withoutAll(FastList.newListWith("1", "2"));
 return list;
 
```
    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.
    Specified by:
    
    withoutAll in interface MutableCollection<T>
    
    See Also:
    Collection.removeAll(Collection)
  - newEmpty
```
MutableBag<T> newEmpty()
```
    Description copied from interface: MutableCollection
    
    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.
    
    Specified by:
    
    newEmpty in interface MutableCollection<T>
  - asUnmodifiable
```
MutableBag<T> asUnmodifiable()
```
    Description copied from interface: MutableCollection
    
    Returns an unmodifiable view of this collection. This method allows modules to provide users with "read-only" access to internal collections. Query operations on the returned collection "read through" to this collection, and attempts to modify the returned collection, whether direct or via its iterator, result in an UnsupportedOperationException.
    The returned collection does not pass the hashCode and equals operations through to the backing collection, but relies on Object's equals and hashCode methods. This is necessary to preserve the contracts of these operations in the case that the backing collection is a set or a list.
    
    The returned collection will be serializable if this collection is serializable.
    
    Specified by:
    
    asUnmodifiable in interface MutableCollection<T>
    
    Returns:
    an unmodifiable view of this collection.
  - asSynchronized
```
MutableBag<T> asSynchronized()
```
    Description copied from interface: MutableCollection
    Returns a synchronized (thread-safe) collection backed by this collection. In order to guarantee serial access, it is critical that all access to the backing collection is accomplished through the returned collection.
    It is imperative that the user manually synchronize on the returned collection when iterating over it using the standard JDK iterator or JDK 5 for loop.
```
  MutableCollection collection = myCollection.asSynchronized();
     ...
  synchronized(collection)
  {
      Iterator i = c.iterator(); // Must be in the synchronized block
      while (i.hasNext())
         foo(i.next());
  }
 
```
    Failure to follow this advice may result in non-deterministic behavior.
    The preferred way of iterating over a synchronized collection is to use the collection.forEach() method which is properly synchronized internally.
```
  MutableCollection collection = myCollection.asSynchronized();
     ...
  collection.forEach(new Procedure()
  {
      public void value(Object each)
      {
          ...
      }
  });
 
```
    The returned collection does not pass the hashCode and equals operations through to the backing collection, but relies on Object's equals and hashCode methods. This is necessary to preserve the contracts of these operations in the case that the backing collection is a set or a list.
    The returned collection will be serializable if this collection is serializable.
    Specified by:
    
    asSynchronized in interface MutableCollection<T>
    
    Returns:
    a synchronized view of this collection.
  - partition
```
PartitionMutableBag<T> partition(Predicate<? super T> predicate)
```
    Description copied from interface: RichIterable
    Filters a collection into a PartitionedIterable based on the evaluation of the predicate.
```
e.g.
 return people.partition(new Predicate<Person>()
 {
     public boolean accept(Person person)
     {
         return person.getAddress().getState().getName().equals("New York");
     }
 });
 
```
    Specified by:
    
    partition in interface Bag<T>
    
    Specified by:
    
    partition in interface MutableCollection<T>
    
    Specified by:
    
    partition in interface RichIterable<T>
    
    Specified by:
    
    partition in interface UnsortedBag<T>
  - partitionWith
```
<P> PartitionMutableBag<T> partitionWith(Predicate2<? super T,? super P> predicate,
                                       P parameter)
```
    Description copied from interface: RichIterable
    Filters a collection into a PartitionIterable based on the evaluation of the predicate.
```
e.g.
 return people.partitionWith(new Predicate2<Person, String>()
 {
     public boolean accept(Person person, String state)
     {
         return person.getAddress().getState().getName().equals(state);
     }
 }, "New York");
 
```
    Specified by:
    
    partitionWith in interface Bag<T>
    
    Specified by:
    
    partitionWith in interface MutableCollection<T>
    
    Specified by:
    
    partitionWith in interface RichIterable<T>
  - groupBy
```
<V> MutableBagMultimap<V,T> groupBy(Function<? super T,? extends V> function)
```
    Description copied from interface: RichIterable
    For each element of the iterable, the function is evaluated and the results of these evaluations are collected into a new multimap, where the transformed value is the key and the original values are added to the same (or similar) species of collection as the source iterable.
```
e.g.
 return people.groupBy(new Function<Person, String>()
 {
     public String value(Person person)
     {
         return person.getFirstName() + " " + person.getLastName();
     }
 });
 
```
    Specified by:
    
    groupBy in interface Bag<T>
    
    Specified by:
    
    groupBy in interface MutableCollection<T>
    
    Specified by:
    
    groupBy in interface RichIterable<T>
    
    Specified by:
    
    groupBy in interface UnsortedBag<T>
  - groupByEach
```
<V> MutableBagMultimap<V,T> groupByEach(Function<? super T,? extends java.lang.Iterable<V>> function)
```
    Description copied from interface: RichIterable
    
    Similar to RichIterable.groupBy(Function), except the result of evaluating function will return a collection of keys for each value.
    
    Specified by:
    
    groupByEach in interface Bag<T>
    
    Specified by:
    
    groupByEach in interface MutableCollection<T>
    
    Specified by:
    
    groupByEach in interface RichIterable<T>
    
    Specified by:
    
    groupByEach in interface UnsortedBag<T>
  - zip
```
<S> MutableBag<Pair<T,S>> zip(java.lang.Iterable<S> that)
```
    Description copied from interface: RichIterable
    
    Returns a RichIterable formed from this RichIterable and another RichIterable by combining corresponding elements in pairs. If one of the two RichIterables is longer than the other, its remaining elements are ignored.
    
    Specified by:
    
    zip in interface MutableCollection<T>
    
    Specified by:
    
    zip in interface RichIterable<T>
    
    Specified by:
    
    zip in interface UnsortedBag<T>
    
    Type Parameters:
    S - the type of the second half of the returned pairs
    Parameters:
    that - The RichIterable providing the second half of each result pair
    
    Returns:
    A new RichIterable containing pairs consisting of corresponding elements of this RichIterable and that. The length of the returned RichIterable is the minimum of the lengths of this RichIterable and that.
  - zipWithIndex
```
MutableSet<Pair<T,java.lang.Integer>> zipWithIndex()
```
    Description copied from interface: RichIterable
    
    Zips this RichIterable with its indices.
    
    Specified by:
    
    zipWithIndex in interface Bag<T>
    
    Specified by:
    
    zipWithIndex in interface MutableCollection<T>
    
    Specified by:
    
    zipWithIndex in interface RichIterable<T>
    
    Specified by:
    
    zipWithIndex in interface UnsortedBag<T>
    
    Returns:
    A new RichIterable containing pairs consisting of all elements of this RichIterable paired with their index. Indices start at 0.
    See Also:
    RichIterable.zip(Iterable)
  - select
```
MutableBag<T> select(Predicate<? super T> predicate)
```
    Description copied from interface: RichIterable
    Returns all elements of the source collection that return true when evaluating the predicate. This method is also commonly called filter.
```
e.g.
 return people.select(new Predicate<Person>()
 {
     public boolean accept(Person person)
     {
         return person.getAddress().getCity().equals("Metuchen");
     }
 });
 
```
    Specified by:
    
    select in interface Bag<T>
    
    Specified by:
    
    select in interface MutableCollection<T>
    
    Specified by:
    
    select in interface RichIterable<T>
    
    Specified by:
    
    select in interface UnsortedBag<T>
  - selectWith
```
<P> MutableBag<T> selectWith(Predicate2<? super T,? super P> predicate,
                           P parameter)
```
    Description copied from interface: RichIterable
    
    Similar to RichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
    
    Specified by:
    
    selectWith in interface Bag<T>
    
    Specified by:
    
    selectWith in interface MutableCollection<T>
    
    Specified by:
    
    selectWith in interface RichIterable<T>
    
    Specified by:
    
    selectWith in interface UnsortedBag<T>
    
    Parameters:
    predicate - a Predicate2 to use as the select criteria
    parameter - a parameter to pass in for evaluation of the second argument P in predicate
    See Also:
    RichIterable.select(Predicate)
  - reject
```
MutableBag<T> reject(Predicate<? super T> predicate)
```
    Description copied from interface: RichIterable
    Returns all elements of the source collection that return false when evaluating of the predicate. This method is also sometimes called filterNot and is the equivalent of calling iterable.select(Predicates.not(predicate)).
```
e.g.
 return people.reject(new Predicate<Person>()
 {
     public boolean accept(Person person)
     {
         return person.person.getLastName().equals("Smith");
     }
 });
 
```
```
e.g.
 return people.reject(Predicates.attributeEqual("lastName", "Smith"));
 
```
    Specified by:
    
    reject in interface Bag<T>
    
    Specified by:
    
    reject in interface MutableCollection<T>
    
    Specified by:
    
    reject in interface RichIterable<T>
    
    Specified by:
    
    reject in interface UnsortedBag<T>
    
    Parameters:
    predicate - a Predicate to use as the reject criteria
    
    Returns:
    a RichIterable that contains elements that cause Predicate.accept(Object) method to evaluate to false
  - rejectWith
```
<P> MutableBag<T> rejectWith(Predicate2<? super T,? super P> predicate,
                           P parameter)
```
    Description copied from interface: RichIterable
    
    Similar to RichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
    
    Specified by:
    
    rejectWith in interface Bag<T>
    
    Specified by:
    
    rejectWith in interface MutableCollection<T>
    
    Specified by:
    
    rejectWith in interface RichIterable<T>
    
    Specified by:
    
    rejectWith in interface UnsortedBag<T>
    
    Parameters:
    predicate - a Predicate2 to use as the select criteria
    parameter - a parameter to pass in for evaluation of the second argument P in predicate
    See Also:
    RichIterable.select(Predicate)
  - selectInstancesOf
```
<S> MutableBag<S> selectInstancesOf(java.lang.Class<S> clazz)
```
    Description copied from interface: RichIterable
    
    Returns all elements of the source collection that are instances of the Class clazz.
    
    Specified by:
    
    selectInstancesOf in interface Bag<T>
    
    Specified by:
    
    selectInstancesOf in interface MutableCollection<T>
    
    Specified by:
    
    selectInstancesOf in interface RichIterable<T>
    
    Specified by:
    
    selectInstancesOf in interface UnsortedBag<T>
  - collect
```
<V> MutableBag<V> collect(Function<? super T,? extends V> function)
```
    Description copied from interface: RichIterable
    Returns a new collection with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collect(new Function<Person, String>()
 {
     public String valueOf(Person person)
     {
         return person.getFirstName() + " " + person.getLastName();
     }
 });
 
```
    Specified by:
    
    collect in interface MutableCollection<T>
    
    Specified by:
    
    collect in interface RichIterable<T>
    
    Specified by:
    
    collect in interface UnsortedBag<T>
  - collectByte
```
MutableByteBag collectByte(ByteFunction<? super T> byteFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectByte(new ByteFunction<Person>()
 {
     public byte byteValueOf(Person person)
     {
         return person.getCode();
     }
 });
 
```
    Specified by:
    
    collectByte in interface MutableCollection<T>
    
    Specified by:
    
    collectByte in interface RichIterable<T>
    
    Specified by:
    
    collectByte in interface UnsortedBag<T>
  - collectChar
```
MutableCharBag collectChar(CharFunction<? super T> charFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectChar(new CharFunction<Person>()
 {
     public char charValueOf(Person person)
     {
         return person.getMiddleInitial();
     }
 });
 
```
    Specified by:
    
    collectChar in interface MutableCollection<T>
    
    Specified by:
    
    collectChar in interface RichIterable<T>
    
    Specified by:
    
    collectChar in interface UnsortedBag<T>
  - collectInt
```
MutableIntBag collectInt(IntFunction<? super T> intFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectInt(new IntFunction<Person>()
 {
     public int intValueOf(Person person)
     {
         return person.getAge();
     }
 });
 
```
    Specified by:
    
    collectInt in interface MutableCollection<T>
    
    Specified by:
    
    collectInt in interface RichIterable<T>
    
    Specified by:
    
    collectInt in interface UnsortedBag<T>
  - collectBoolean
```
MutableBooleanBag collectBoolean(BooleanFunction<? super T> booleanFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectBoolean(new BooleanFunction<Person>()
 {
     public boolean booleanValueOf(Person person)
     {
         return person.hasDrivingLicense();
     }
 });
 
```
    Specified by:
    
    collectBoolean in interface MutableCollection<T>
    
    Specified by:
    
    collectBoolean in interface RichIterable<T>
    
    Specified by:
    
    collectBoolean in interface UnsortedBag<T>
  - collectDouble
```
MutableDoubleBag collectDouble(DoubleFunction<? super T> doubleFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectDouble(new DoubleFunction<Person>()
 {
     public double doubleValueOf(Person person)
     {
         return person.getMilesFromNorthPole();
     }
 });
 
```
    Specified by:
    
    collectDouble in interface MutableCollection<T>
    
    Specified by:
    
    collectDouble in interface RichIterable<T>
    
    Specified by:
    
    collectDouble in interface UnsortedBag<T>
  - collectFloat
```
MutableFloatBag collectFloat(FloatFunction<? super T> floatFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectFloat(new FloatFunction<Person>()
 {
     public float floatValueOf(Person person)
     {
         return person.getHeightInInches();
     }
 });
 
```
    Specified by:
    
    collectFloat in interface MutableCollection<T>
    
    Specified by:
    
    collectFloat in interface RichIterable<T>
    
    Specified by:
    
    collectFloat in interface UnsortedBag<T>
  - collectLong
```
MutableLongBag collectLong(LongFunction<? super T> longFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectLong(new LongFunction<Person>()
 {
     public long longValueOf(Person person)
     {
         return person.getGuid();
     }
 });
 
```
    Specified by:
    
    collectLong in interface MutableCollection<T>
    
    Specified by:
    
    collectLong in interface RichIterable<T>
    
    Specified by:
    
    collectLong in interface UnsortedBag<T>
  - collectShort
```
MutableShortBag collectShort(ShortFunction<? super T> shortFunction)
```
    Description copied from interface: RichIterable
    Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.
```
e.g.
 return people.collectShort(new ShortFunction<Person>()
 {
     public short shortValueOf(Person person)
     {
         return person.getNumberOfJunkMailItemsReceivedPerMonth();
     }
 });
 
```
    Specified by:
    
    collectShort in interface MutableCollection<T>
    
    Specified by:
    
    collectShort in interface RichIterable<T>
    
    Specified by:
    
    collectShort in interface UnsortedBag<T>
  - collectWith
```
<P,V> MutableBag<V> collectWith(Function2<? super T,? super P,? extends V> function,
                              P parameter)
```
    Description copied from interface: RichIterable
    Same as collect with a Function2 and specified parameter which is passed to the block
```
e.g.
 Function2 addParameterFunction =
 new Function2()
 {
      public Integer value(final Integer each, final Integer parameter)
      {
          return each + parameter;
      }
 };
 FastList.newListWith(1, 2, 3).collectWith(addParameterFunction, Integer.valueOf(1));
 
```
    Specified by:
    
    collectWith in interface MutableCollection<T>
    
    Specified by:
    
    collectWith in interface RichIterable<T>
    
    Specified by:
    
    collectWith in interface UnsortedBag<T>
    
    Parameters:
    function - A Function2 to use as the collect transformation function
    parameter - A parameter to pass in for evaluation of the second argument P in function
    
    Returns:
    A new RichIterable that contains the transformed elements returned by Function2.value(Object, Object)
    See Also:
    RichIterable.collect(Function)
  - collectIf
```
<V> MutableBag<V> collectIf(Predicate<? super T> predicate,
                          Function<? super T,? extends V> function)
```
    Description copied from interface: RichIterable
    Returns a new collection with the results of applying the specified function on each element of the source collection, but only for those elements which return true upon evaluation of the predicate. This is the the optimized equivalent of calling iterable.select(predicate).collect(function).
```
e.g.
 Lists.mutable.of().with(1, 2, 3).collectIf(Predicates.notNull(), Functions.getToString())
 
```
    Specified by:
    
    collectIf in interface MutableCollection<T>
    
    Specified by:
    
    collectIf in interface RichIterable<T>
    
    Specified by:
    
    collectIf in interface UnsortedBag<T>
  - flatCollect
```
<V> MutableBag<V> flatCollect(Function<? super T,? extends java.lang.Iterable<V>> function)
```
    Description copied from interface: RichIterable
    flatCollect is a special case of RichIterable.collect(Function). With collect, when the Function returns a collection, the result is a collection of collections. flatCollect outputs a single "flattened" collection instead. This method is commonly called flatMap.
    Consider the following example where we have a Person class, and each Person has a list of Address objects. Take the following Function:
```
 Function<Person, List<Address>> addressFunction = new Function<Person, List<Address>>() {
     public List<Address> valueOf(Person person) {
         return person.getAddresses();
     }
 };
 MutableList<Person> people = ...;
 
```
    Using collect returns a collection of collections of addresses.
```
 MutableList<List<Address>> addresses = people.collect(addressFunction);
 
```
    Using flatCollect returns a single flattened list of addresses.
```
 MutableList<Address> addresses = people.flatCollect(addressFunction);
 
```
    Specified by:
    
    flatCollect in interface MutableCollection<T>
    
    Specified by:
    
    flatCollect in interface RichIterable<T>
    
    Specified by:
    
    flatCollect in interface UnsortedBag<T>
    
    Parameters:
    function - The Function to apply
    
    Returns:
    a new flattened collection produced by applying the given function
  - addOccurrences
```
void addOccurrences(T item,
                  int occurrences)
```
  - removeOccurrences
```
boolean removeOccurrences(java.lang.Object item,
                        int occurrences)
```
  - setOccurrences
```
boolean setOccurrences(T item,
                     int occurrences)
```

Interface MutableBag<T>

Method Summary

Methods inherited from interface com.gs.collections.api.bag.UnsortedBag

Methods inherited from interface com.gs.collections.api.bag.Bag

Methods inherited from interface com.gs.collections.api.RichIterable

Methods inherited from interface com.gs.collections.api.InternalIterable

Methods inherited from interface java.lang.Iterable

Methods inherited from interface com.gs.collections.api.collection.MutableCollection

Methods inherited from interface java.util.Collection

Method Detail

selectByOccurrences

with

without

withAll

withoutAll

newEmpty

asUnmodifiable

asSynchronized

partition

partitionWith

groupBy

groupByEach

zip

zipWithIndex

select

selectWith

reject

rejectWith

selectInstancesOf

collect

collectByte

collectChar

collectInt

collectBoolean

collectDouble

collectFloat

collectLong

collectShort

collectWith

collectIf

flatCollect

addOccurrences

removeOccurrences

setOccurrences