org.tribuo.util.infotheory.impl

Class CachedPair<T1,T2>

java.lang.Object

com.oracle.labs.mlrg.olcut.util.Pair<T1,T2>

org.tribuo.util.infotheory.impl.CachedPair<T1,T2>

Type Parameters:

T1 - The type of the first object.

T2 - The type of the second object.

All Implemented Interfaces:

Serializable

public class CachedPair<T1,T2>
extends com.oracle.labs.mlrg.olcut.util.Pair<T1,T2>

A pair of things with a cached hashcode.

The cache is calculated on construction, and the objects inside the pair are thus expected to be immutable. If they aren't then the behaviour is undefined (and you shouldn't use this class).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CachedPair(T1 a, T2 b)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode() Overridden hashcode.
static <T1,T2> ArrayList<CachedPair<T1,T2>>	zipArraysCached(ArrayList<T1> first, ArrayList<T2> second) Takes two arrays and zips them together into an array of CachedPairs.

Methods inherited from class com.oracle.labs.mlrg.olcut.util.Pair

getA, getB, toString, zipArrays

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedPair

public CachedPair(T1 a,
                  T2 b)

Method Detail

zipArraysCached

public static <T1,T2> ArrayList<CachedPair<T1,T2>> zipArraysCached(ArrayList<T1> first,
                                                                   ArrayList<T2> second)

Takes two arrays and zips them together into an array of CachedPairs.

Type Parameters:

T1 - The type contained in the first array.

T2 - The type contained in the second array.

Parameters:

first - An array of values.

second - Another array of values.

Returns:

The zipped array.

hashCode

public int hashCode()

Overridden hashcode. Uses the cached value calculated on construction.

Overrides:

hashCode in class com.oracle.labs.mlrg.olcut.util.Pair<T1,T2>

Returns:

A 32-bit integer.

equals

public boolean equals(Object o)

Overrides:

equals in class com.oracle.labs.mlrg.olcut.util.Pair<T1,T2>