org.pcollections

Class HashTreePBag

java.lang.Object

org.pcollections.HashTreePBag

public final class HashTreePBag
extends Object

A static convenience class for creating efficient persistent bags.

This class simply creates MapPBags backed by HashTreePMaps.

Author:

harold

Method Summary

Modifier and Type	Method and Description
static <E> MapPBag<E>	empty()
static <E> MapPBag<E>	from(Collection<? extends E> list)
static <E> MapPBag<E>	singleton(E e)

Methods inherited from class java.lang.Object

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

Method Detail

empty

public static <E> MapPBag<E> empty()

Type Parameters:

E -

Returns:

an empty bag

singleton

public static <E> MapPBag<E> singleton(E e)

Type Parameters:

E -

Parameters:

e -

Returns:

empty().plus(e)

from

public static <E> MapPBag<E> from(Collection<? extends E> list)

Type Parameters:

E -

Parameters:

list -

Returns:

empty().plusAll(map)