org.apache.mahout.math.set

Class AbstractDoubleSet

java.lang.Object

org.apache.mahout.math.PersistentObject

org.apache.mahout.math.set.AbstractSet

org.apache.mahout.math.set.AbstractDoubleSet

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

OpenDoubleHashSet

public abstract class AbstractDoubleSet
extends AbstractSet

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.mahout.math.set.AbstractSet

DEFAULT_CAPACITY, DEFAULT_MAX_LOAD_FACTOR, DEFAULT_MIN_LOAD_FACTOR, distinct, highWaterMark, lowWaterMark, maxLoadFactor, minLoadFactor

Constructor Summary

Constructors

Constructor and Description
AbstractDoubleSet()

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	add(double key) Associates the given key with the given value.
boolean	contains(double key) Returns true if the receiver contains the specified key.
AbstractDoubleSet	copy() Returns a deep copy of the receiver; uses clone() and casts the result.
boolean	equals(Object obj)
abstract boolean	forEachKey(DoubleProcedure procedure) Applies a procedure to each key of the receiver, if any.
int	hashCode()
DoubleArrayList	keys() Returns a list filled with all keys contained in the receiver.
void	keys(DoubleArrayList list) Fills all keys contained in the receiver into the specified list.
abstract boolean	remove(double key) Removes the given key with its associated element from the receiver, if present.
String	toString() Returns a string representation of the receiver, containing the String representation of each key-value pair, sorted ascending by key.

Methods inherited from class org.apache.mahout.math.set.AbstractSet

chooseGrowCapacity, chooseHighWaterMark, chooseLowWaterMark, chooseMeanCapacity, chooseShrinkCapacity, clear, ensureCapacity, equalsMindTheNull, isEmpty, nextPrime, setUp, size, trimToSize

Methods inherited from class org.apache.mahout.math.PersistentObject

clone

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractDoubleSet

public AbstractDoubleSet()

Method Detail

contains

public boolean contains(double key)

Returns true if the receiver contains the specified key.

Returns:

true if the receiver contains the specified key.

copy

public AbstractDoubleSet copy()

Returns a deep copy of the receiver; uses clone() and casts the result.

Returns:

a deep copy of the receiver.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

forEachKey

public abstract boolean forEachKey(DoubleProcedure procedure)

Applies a procedure to each key of the receiver, if any. Note: Iterates over the keys in no particular order. Subclasses can define a particular order, for example, "sorted by key". All methods which can be expressed in terms of this method (most methods can) must guarantee to use the same order defined by this method, even if it is no particular order. This is necessary so that, for example, methods keys and values will yield association pairs, not two uncorrelated lists.

Parameters:

procedure - the procedure to be applied. Stops iteration if the procedure returns false, otherwise continues.

Returns:

false if the procedure stopped before all keys where iterated over, true otherwise.

keys

public DoubleArrayList keys()

Returns a list filled with all keys contained in the receiver. The returned list has a size that equals this.size(). Iteration order is guaranteed to be identical to the order used by method forEachKey(DoubleProcedure).

This method can be used to iterate over the keys of the receiver.

Returns:

the keys.

keys

public void keys(DoubleArrayList list)

Fills all keys contained in the receiver into the specified list. Fills the list, starting at index 0. After this call returns the specified list has a new size that equals this.size(). Iteration order is guaranteed to be identical to the order used by method forEachKey(DoubleProcedure).

This method can be used to iterate over the keys of the receiver.

Parameters:

list - the list to be filled, can have any size.

add

public abstract boolean add(double key)

Associates the given key with the given value. Replaces any old (key,someOtherValue) association, if existing.

Parameters:

key - the key the value shall be associated with.

Returns:

true if the receiver did not already contain such a key; false if the receiver did already contain such a key - the new value has now replaced the formerly associated value.

remove

public abstract boolean remove(double key)

Removes the given key with its associated element from the receiver, if present.

Parameters:

key - the key to be removed from the receiver.

Returns:

true if the receiver contained the specified key, false otherwise.

toString

public String toString()

Returns a string representation of the receiver, containing the String representation of each key-value pair, sorted ascending by key.

Overrides:

toString in class Object