org.apache.mahout.cf.taste.impl.common
Class FastIDSet
java.lang.Object
org.apache.mahout.cf.taste.impl.common.FastIDSet
- All Implemented Interfaces:
- Serializable, Cloneable, Iterable<Long>
public final class FastIDSet
- extends Object
- implements Serializable, Cloneable, Iterable<Long>
- See Also:
FastByIDMap
,
Serialized Form
FastIDSet
public FastIDSet()
- Creates a new with default capacity.
FastIDSet
public FastIDSet(long[] initialKeys)
FastIDSet
public FastIDSet(int size)
size
public int size()
isEmpty
public boolean isEmpty()
contains
public boolean contains(long key)
add
public boolean add(long key)
iterator
public LongPrimitiveIterator iterator()
- Specified by:
iterator
in interface Iterable<Long>
toArray
public long[] toArray()
remove
public boolean remove(long key)
addAll
public boolean addAll(long[] c)
addAll
public boolean addAll(FastIDSet c)
removeAll
public boolean removeAll(long[] c)
removeAll
public boolean removeAll(FastIDSet c)
retainAll
public boolean retainAll(FastIDSet c)
clear
public void clear()
rehash
public void rehash()
intersectionSize
public int intersectionSize(FastIDSet other)
- Convenience method to quickly compute just the size of the intersection with another .
- Parameters:
other
- to intersect with
- Returns:
- number of elements in intersection
clone
public FastIDSet clone()
- Overrides:
clone
in class Object
hashCode
public int hashCode()
- Overrides:
hashCode
in class Object
equals
public boolean equals(Object other)
- Overrides:
equals
in class Object
toString
public String toString()
- Overrides:
toString
in class Object
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