gnu.trove.set

Interface TDoubleSet

All Superinterfaces:

TDoubleCollection

All Known Implementing Classes:

TDoubleByteHashMap.TKeyView, TDoubleCharHashMap.TKeyView, TDoubleDoubleHashMap.TKeyView, TDoubleFloatHashMap.TKeyView, TDoubleHashSet, TDoubleIntHashMap.TKeyView, TDoubleLongHashMap.TKeyView, TDoubleShortHashMap.TKeyView, TSynchronizedDoubleSet, TUnmodifiableDoubleSet

public interface TDoubleSet
extends TDoubleCollection

An implementation of the Set interface that uses an open-addressed hash table to store its contents. Created: Sat Nov 3 10:38:17 2001

Field Summary

Fields inherited from interface gnu.trove.TDoubleCollection

serialVersionUID

Method Summary

Modifier and Type	Method and Description
boolean	add(double entry) Inserts a value into the set.
boolean	addAll(java.util.Collection<? extends java.lang.Double> collection) Adds all of the elements in collection to the set.
boolean	addAll(double[] array) Adds all of the elements in the array to the set.
boolean	addAll(TDoubleCollection collection) Adds all of the elements in the TDoubleCollection to the set.
void	clear() Empties the set.
boolean	contains(double entry) Returns true if this set contains the specified element.
boolean	containsAll(java.util.Collection<?> collection) Tests the set to determine if all of the elements in collection are present.
boolean	containsAll(double[] array) Tests the set to determine if all of the elements in array are present.
boolean	containsAll(TDoubleCollection collection) Tests the set to determine if all of the elements in TDoubleCollection are present.
boolean	equals(java.lang.Object o) Compares the specified object with this set for equality.
boolean	forEach(TDoubleProcedure procedure) Executes procedure for each element in the set.
double	getNoEntryValue() Returns the value that is used to represent null.
int	hashCode() Returns the hash code value for this set.
boolean	isEmpty() Returns true if this set contains no elements.
TDoubleIterator	iterator() Creates an iterator over the values of the set.
boolean	remove(double entry) Removes entry from the set.
boolean	removeAll(java.util.Collection<?> collection) Removes all of the elements in collection from the set.
boolean	removeAll(double[] array) Removes all of the elements in array from the set.
boolean	removeAll(TDoubleCollection collection) Removes all of the elements in TDoubleCollection from the set.
boolean	retainAll(java.util.Collection<?> collection) Removes any values in the set which are not contained in collection.
boolean	retainAll(double[] array) Removes any values in the set which are not contained in array.
boolean	retainAll(TDoubleCollection collection) Removes any values in the set which are not contained in TDoubleCollection.
int	size() Returns the number of elements in this set (its cardinality).
double[]	toArray() Returns an array containing all of the elements in this set.
double[]	toArray(double[] dest) Returns an array containing elements in this set.

Method Detail

getNoEntryValue

double getNoEntryValue()

Returns the value that is used to represent null. The default value is generally zero, but can be configured during construction of the collection.

Specified by:

getNoEntryValue in interface TDoubleCollection

Returns:

the value that represents null

size

int size()

Returns the number of elements in this set (its cardinality). If this set contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Specified by:

size in interface TDoubleCollection

Returns:

the number of elements in this set (its cardinality)

isEmpty

boolean isEmpty()

Returns true if this set contains no elements.

Specified by:

isEmpty in interface TDoubleCollection

Returns:

true if this set contains no elements

contains

boolean contains(double entry)

Returns true if this set contains the specified element.

Specified by:

contains in interface TDoubleCollection

Parameters:

entry - an double value

Returns:

true if the set contains the specified element.

iterator

TDoubleIterator iterator()

Creates an iterator over the values of the set. The iterator supports element deletion.

Specified by:

iterator in interface TDoubleCollection

Returns:

an TDoubleIterator value

toArray

double[] toArray()

Returns an array containing all of the elements in this set. If this set makes any guarantees as to what order its elements are returned by its iterator, this method must return the elements in the same order.

The returned array will be "safe" in that no references to it are maintained by this set. (In other words, this method must allocate a new array even if this set is backed by an array). The caller is thus free to modify the returned array.

This method acts as bridge between array-based and collection-based APIs.

Specified by:

toArray in interface TDoubleCollection

Returns:

an array containing all the elements in this set

toArray

double[] toArray(double[] dest)

Returns an array containing elements in this set.

If this set fits in the specified array with room to spare (i.e., the array has more elements than this set), the element in the array immediately following the end of the set is set to getNoEntryValue(). (This is useful in determining the length of this set only if the caller knows that this set does not contain any elements representing null.)

If the native array is smaller than the set size, the array will be filled with elements in Iterator order until it is full and exclude the remainder.

If this set makes any guarantees as to what order its elements are returned by its iterator, this method must return the elements in the same order.

Specified by:

toArray in interface TDoubleCollection

Parameters:

dest - the array into which the elements of this set are to be stored.

Returns:

an double[] containing all the elements in this set

Throws:

java.lang.NullPointerException - if the specified array is null

add

boolean add(double entry)

Inserts a value into the set.

Specified by:

add in interface TDoubleCollection

Parameters:

entry - a double value

Returns:

true if the set was modified by the add operation

remove

boolean remove(double entry)

Removes entry from the set.

Specified by:

remove in interface TDoubleCollection

Parameters:

entry - an double value

Returns:

true if the set was modified by the remove operation.

containsAll

boolean containsAll(java.util.Collection<?> collection)

Tests the set to determine if all of the elements in collection are present.

Specified by:

containsAll in interface TDoubleCollection

Parameters:

collection - a Collection value

Returns:

true if all elements were present in the set.

containsAll

boolean containsAll(TDoubleCollection collection)

Tests the set to determine if all of the elements in TDoubleCollection are present.

Specified by:

containsAll in interface TDoubleCollection

Parameters:

collection - a TDoubleCollection value

Returns:

true if all elements were present in the set.

containsAll

boolean containsAll(double[] array)

Tests the set to determine if all of the elements in array are present.

Specified by:

containsAll in interface TDoubleCollection

Parameters:

array - as array of double primitives.

Returns:

true if all elements were present in the set.

addAll

boolean addAll(java.util.Collection<? extends java.lang.Double> collection)

Adds all of the elements in collection to the set.

Specified by:

addAll in interface TDoubleCollection

Parameters:

collection - a Collection value

Returns:

true if the set was modified by the add all operation.

addAll

boolean addAll(TDoubleCollection collection)

Adds all of the elements in the TDoubleCollection to the set.

Specified by:

addAll in interface TDoubleCollection

Parameters:

collection - a TDoubleCollection value

Returns:

true if the set was modified by the add all operation.

addAll

boolean addAll(double[] array)

Adds all of the elements in the array to the set.

Specified by:

addAll in interface TDoubleCollection

Parameters:

array - a array of double primitives.

Returns:

true if the set was modified by the add all operation.

retainAll

boolean retainAll(java.util.Collection<?> collection)

Removes any values in the set which are not contained in collection.

Specified by:

retainAll in interface TDoubleCollection

Parameters:

collection - a Collection value

Returns:

true if the set was modified by the retain all operation

retainAll

boolean retainAll(TDoubleCollection collection)

Removes any values in the set which are not contained in TDoubleCollection.

Specified by:

retainAll in interface TDoubleCollection

Parameters:

collection - a TDoubleCollection value

Returns:

true if the set was modified by the retain all operation

retainAll

boolean retainAll(double[] array)

Removes any values in the set which are not contained in array.

Specified by:

retainAll in interface TDoubleCollection

Parameters:

array - an array of double primitives.

Returns:

true if the set was modified by the retain all operation

removeAll

boolean removeAll(java.util.Collection<?> collection)

Removes all of the elements in collection from the set.

Specified by:

removeAll in interface TDoubleCollection

Parameters:

collection - a Collection value

Returns:

true if the set was modified by the remove all operation.

removeAll

boolean removeAll(TDoubleCollection collection)

Removes all of the elements in TDoubleCollection from the set.

Specified by:

removeAll in interface TDoubleCollection

Parameters:

collection - a TDoubleCollection value

Returns:

true if the set was modified by the remove all operation.

removeAll

boolean removeAll(double[] array)

Removes all of the elements in array from the set.

Specified by:

removeAll in interface TDoubleCollection

Parameters:

array - an array of double primitives.

Returns:

true if the set was modified by the remove all operation.

clear

void clear()

Empties the set.

Specified by:

clear in interface TDoubleCollection

forEach

boolean forEach(TDoubleProcedure procedure)

Executes procedure for each element in the set.

Specified by:

forEach in interface TDoubleCollection

Parameters:

procedure - a TDoubleProcedure value

Returns:

false if the loop over the set terminated because the procedure returned false for some value.

equals

boolean equals(java.lang.Object o)

Compares the specified object with this set for equality. Returns true if the specified object is also a set, the two sets have the same size, and every member of the specified set is contained in this set (or equivalently, every member of this set is contained in the specified set). This definition ensures that the equals method works properly across different implementations of the set interface.

Specified by:

equals in interface TDoubleCollection

Overrides:

equals in class java.lang.Object

Parameters:

o - object to be compared for equality with this set

Returns:

true if the specified object is equal to this set

hashCode

int hashCode()

Returns the hash code value for this set. The hash code of a set is defined to be the sum of the hash codes of the elements in the set. This ensures that s1.equals(s2) implies that s1.hashCode()==s2.hashCode() for any two sets s1 and s2, as required by the general contract of Object.hashCode().

Specified by:

hashCode in interface TDoubleCollection

Overrides:

hashCode in class java.lang.Object

Returns:

the hash code value for this set

See Also:

Object.equals(Object), Set.equals(Object)