Class HashTreePMap

java.lang.Object

org.pcollections.HashTreePMap

public final class HashTreePMap
extends Object

A static convenience class for creating efficient persistent maps.

This class simply creates HashPMaps backed by IntTreePMaps.

Field Summary

Fields

Modifier and Type	Field	Description
private static final HashPMap<Object,Object>	EMPTY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	HashTreePMap()

Method Summary

Modifier and Type	Method	Description
static <K,V> HashPMap<K,V>	empty()
static <K,V> HashPMap<K,V>	from(Map<? extends K, ? extends V> map)
static <K,V> HashPMap<K,V>	singleton(K key, V value)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EMPTY

private static final HashPMap<Object,Object> EMPTY

Constructor Details

HashTreePMap

private HashTreePMap()

Method Details

empty

public static <K,V> HashPMap<K,V> empty()

Type Parameters:

K -

V -

Returns:

an empty map

singleton

public static <K,V> HashPMap<K,V> singleton(K key,
 V value)

Type Parameters:

K -

V -

Parameters:

key -

value -

Returns:

empty().plus(key, value)

from

public static <K,V> HashPMap<K,V> from(Map<? extends K, ? extends V> map)

Type Parameters:

K -

V -

Parameters:

map -

Returns:

empty().plusAll(map)