Package com.activeviam.collections

Interface ImmutableSet<E>

Type Parameters:

E - The type of items contained in this set.

All Superinterfaces:

ImmutableCollection<E>, Iterable<E>

All Known Implementing Classes:

ImmutableHashSet

public interface ImmutableSet<E>
extends ImmutableCollection<E>

Immutable set with a functional API.

Author:

ActiveViam

Method Summary

Modifier and Type	Method	Description
ImmutableSet<E>	add(E e)	Create a new collection having the items of this collection plus one new item.
ImmutableSet<E>	add(E first, E second, E... rest)	Create a new collection having the items of this collection plus new items.
default ImmutableSet<E>	addAll(ImmutableCollection<E> col)	Create a new collection having the items of this collection plus items from another collection.
default ImmutableSet<E>	addAll(ImmutableSet<E> set)	Create a new set having the items of this collection plus items from another set.
ImmutableSet<E>	addAll(Collection<? extends E> col)	Create a new collection having the items of this collection plus items from another collection.
default ImmutableSet<E>	debug(String prefix)	Prints the content of this collection to System.out and return itself.
ImmutableSet<E>	filter(Predicate<E> predicate)	Filter the items from this set with a predicate.
<R> ImmutableSet<R>	flatMap(Function<E,Iterable<R>> mapper)	Flat map this set.
default String	join(String separator)	Concatenate the toString() of all the items in this set separated by a separator.
<R> ImmutableSet<R>	map(Function<E,R> mapper)	Map this set.
ImmutableList<E>	toList()	Create a read-only java util list from this set.
<V> ImmutableMap<E,V>	toMap(Function<E,V> mapper)	Map the items of this set.
Set<E>	toSet()	Create a read-only java util set from this set.

Methods inherited from interface com.activeviam.collections.ImmutableCollection

addAll, contains, doesNotContain, every, find, findIndex, first, forEach, forEachUntil, getFirst, isEmpty, isNotEmpty, reduce, size, some, toArray, toArray, toCollection

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Details

add

ImmutableSet<E> add(E e)

Description copied from interface: ImmutableCollection

Create a new collection having the items of this collection plus one new item.

Specified by:

add in interface ImmutableCollection<E>

Parameters:

e - The items to add.

Returns:

The new collection.

add

ImmutableSet<E> add(E first,
 E second,
 E... rest)

Description copied from interface: ImmutableCollection

Create a new collection having the items of this collection plus new items.

Specified by:

add in interface ImmutableCollection<E>

Parameters:

first - The first item to add.

second - The second item to add.

rest - The other items to add.

Returns:

The new collection.

map

<R> ImmutableSet<R> map(Function<E,R> mapper)

Map this set.

Type Parameters:

R - The type returned by the mapper.

Parameters:

mapper - The mapping function.

Returns:

The set containing the mapped elements.

See Also:

• Stream.map(Function)

flatMap

<R> ImmutableSet<R> flatMap(Function<E,Iterable<R>> mapper)

Flat map this set.

Specified by:

flatMap in interface ImmutableCollection<E>

Type Parameters:

R - The type returned by the mapper.

Parameters:

mapper - The mapping function.

Returns:

The set containing the mapped elements.

See Also:

• Stream.flatMap(Function)

toList

ImmutableList<E> toList()

Create a read-only java util list from this set.

Returns:

The list.

toSet

Set<E> toSet()

Create a read-only java util set from this set.

Returns:

The set.

filter

ImmutableSet<E> filter(Predicate<E> predicate)

Filter the items from this set with a predicate.

Parameters:

predicate - The predicate filtering the items.

Returns:

The set containing only the items that matched the predicate.

toMap

<V> ImmutableMap<E,V> toMap(Function<E,V> mapper)

Map the items of this set.

Type Parameters:

V - The type returned by the mapper.

Parameters:

mapper - The mapping function that will be applied to each item of this set.

Returns:

The set containing the mapped items.

addAll

ImmutableSet<E> addAll(Collection<? extends E> col)

Description copied from interface: ImmutableCollection

Create a new collection having the items of this collection plus items from another collection.

Specified by:

addAll in interface ImmutableCollection<E>

Parameters:

col - The items to add.

Returns:

The new collection.

addAll

default ImmutableSet<E> addAll(ImmutableSet<E> set)

Create a new set having the items of this collection plus items from another set.

Parameters:

set - The items to add.

Returns:

The new set.

addAll

default ImmutableSet<E> addAll(ImmutableCollection<E> col)

Description copied from interface: ImmutableCollection

Create a new collection having the items of this collection plus items from another collection.

Specified by:

addAll in interface ImmutableCollection<E>

Parameters:

col - The items to add.

Returns:

The new collection.

debug

default ImmutableSet<E> debug(String prefix)

Prints the content of this collection to System.out and return itself. Useful for debugging inside chained calls.

Parameters:

prefix - The prefix to print before the collection.

Returns:

The collection itself.

join

default String join(String separator)

Concatenate the toString() of all the items in this set separated by a separator.

Parameters:

separator - The string to place between each item's string representation. Cannot be null.

Returns:

The string formed by the concatenation of all the members with the separator.