clojure.lang

Class PersistentArrayMap

java.lang.Object

clojure.lang.Obj

clojure.lang.AFn

clojure.lang.APersistentMap

clojure.lang.PersistentArrayMap

All Implemented Interfaces:

Associative, Counted, IFn, IMeta, IObj, IPersistentCollection, IPersistentMap, Seqable, java.io.Serializable, java.lang.Iterable, java.lang.Runnable, java.util.concurrent.Callable, java.util.Map

public class PersistentArrayMap
extends APersistentMap

Simple implementation of persistent map on an array

Note that instances of this class are constant values i.e. add/remove etc return new values

Copies array on every change, so only appropriate for _very_small_ maps

null keys and values are ok, but you won't be able to distinguish a null value via valAt - use contains/entryAt

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class clojure.lang.APersistentMap

APersistentMap.KeySeq, APersistentMap.ValSeq

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field and Description
static PersistentArrayMap	EMPTY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PersistentArrayMap()
	PersistentArrayMap(IPersistentMap meta, java.lang.Object[] init)
	PersistentArrayMap(java.lang.Object[] init) This ctor captures/aliases the passed array, so do not modify later

Method Summary

Modifier and Type	Method and Description
IPersistentMap	assoc(java.lang.Object key, java.lang.Object val)
IPersistentMap	assocEx(java.lang.Object key, java.lang.Object val)
int	capacity()
boolean	containsKey(java.lang.Object key)
int	count()
static IPersistentMap	create(java.util.Map other)
IPersistentMap	empty()
IMapEntry	entryAt(java.lang.Object key)
java.util.Iterator	iterator()
ISeq	seq()
java.lang.Object	valAt(java.lang.Object key)
java.lang.Object	valAt(java.lang.Object key, java.lang.Object notFound)
PersistentArrayMap	withMeta(IPersistentMap meta)
IPersistentMap	without(java.lang.Object key)

Methods inherited from class clojure.lang.APersistentMap

clear, cons, containsValue, entrySet, equals, equiv, get, hashCode, invoke, invoke, isEmpty, keySet, put, putAll, remove, size, toString, values

Methods inherited from class clojure.lang.AFn

applyTo, applyToHelper, call, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, invoke, run, throwArity

Methods inherited from class clojure.lang.Obj

meta

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Detail

EMPTY

public static final PersistentArrayMap EMPTY

Constructor Detail

PersistentArrayMap

protected PersistentArrayMap()

PersistentArrayMap

public PersistentArrayMap(java.lang.Object[] init)

This ctor captures/aliases the passed array, so do not modify later

Parameters:

init - {key1,val1,key2,val2,...}

PersistentArrayMap

public PersistentArrayMap(IPersistentMap meta,
                          java.lang.Object[] init)

Method Detail

create

public static IPersistentMap create(java.util.Map other)

withMeta

public PersistentArrayMap withMeta(IPersistentMap meta)

Specified by:

withMeta in interface IObj

Overrides:

withMeta in class AFn

count

public int count()

containsKey

public boolean containsKey(java.lang.Object key)

entryAt

public IMapEntry entryAt(java.lang.Object key)

assocEx

public IPersistentMap assocEx(java.lang.Object key,
                              java.lang.Object val)
                       throws java.lang.Exception

Throws:

java.lang.Exception

assoc

public IPersistentMap assoc(java.lang.Object key,
                            java.lang.Object val)

without

public IPersistentMap without(java.lang.Object key)

empty

public IPersistentMap empty()

valAt

public final java.lang.Object valAt(java.lang.Object key,
                                    java.lang.Object notFound)

valAt

public java.lang.Object valAt(java.lang.Object key)

capacity

public int capacity()

iterator

public java.util.Iterator iterator()

seq

public ISeq seq()