Package org.midheaven.collections

Interface EditableAssociation<K,V>

Type Parameters:

K - the type of the key

V - the type of the value

All Superinterfaces:

Association<K,V>, Assortment<Association.Entry<K,V>>, Countable, Enumerable<Association.Entry<K,V>>, Iterable<Association.Entry<K,V>>

All Known Subinterfaces:

ResizableAssociation<K,V>

public interface EditableAssociation<K,V>
extends Association<K,V>

An Association that permits changing the values for the present keys, but does not allow to add more keys or change the ones already associated.

Nested Class Summary

Nested classes/interfaces inherited from interface org.midheaven.collections.Association

Association.Entry<K,V>

Method Summary

Modifier and Type	Method	Description
void	computeValue(K key, BiFunction<K,V,V> computation)	Recomputed the value of a given key delegation to a given computation.
boolean	setValue(K key, V value)	Changes the value associated with the key.
default Association<K,V>	toUnmodifiable()	Returns an unmodifiable view of this EditableAssociation

Methods inherited from interface org.midheaven.collections.Association

computeValueIfAbsent, containsKey, containsValue, getValue, intersection, keys, toCollection, union, values

Methods inherited from interface org.midheaven.collections.Assortment

contains, containsAll, count, isEmpty

Methods inherited from interface org.midheaven.collections.Enumerable

allMatch, any, anyMatch, as, associate, associate, cast, collect, concat, distinct, enumerator, filter, first, flatMap, groupBy, iterator, limit, map, maximum, minimum, ofType, peek, reduce, reduce, skip, sorted, toArray, toArray, toArray, toDistinctAssortment, toSequence, toSequence, with, zip

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Details

toUnmodifiable

default Association<K,V> toUnmodifiable()

Returns an unmodifiable view of this EditableAssociation

Returns:

an unmodifiable view of this EditableAssociation

setValue

boolean setValue(K key,
 V value)

Changes the value associated with the key. If the key is not present, nothing happens.

Parameters:

key -

value -

Returns:

true if the key is present, false otherwise.

computeValue

void computeValue(K key,
 BiFunction<K,V,V> computation)

Recomputed the value of a given key delegation to a given computation. If the key is not present, nothing happens.

Parameters:

key - the value key

computation - a function that receives the key, the old value and returns the new value