NotifiableSet<E> class

Class that mimics Set, and notify its listener every time the set is changed.

This set will notify its listener when a change is detected (an item has been added, removed, updated, etc... or the set has been sorted, mapped, etc...). However, it won't notify its listener if its items are changed, even if they extends ChangeNotifier.

Inheritance

• Object
• ChangeNotifier
• NotifiableSet

Implemented types

• Set<E>

Available Extensions

• EnumByName
• IterableExtensions
• NullableIterableExtensions

Constructors

NotifiableSet({dynamic propagateNotification = true})

Create an empty NotifiableSet.

NotifiableSet.from(Iterable elements, {dynamic propagateNotification = true})

Create a NotifiableSet by adding all elements from elements, regardless of their type.

NotifiableSet.of(Iterable<E> elements, {dynamic propagateNotification = true})

Create a NotifiableSet by adding all elements of elements of type E.

Properties

first → E

The first element.

no setter, override

hashCode → int

The hash code for this object.

no setter, override

hasListeners → bool

Whether any listeners are currently registered.

no setter, inherited

isEmpty → bool

Whether this collection has no elements.

no setter, override

isNotEmpty → bool

Whether this collection has at least one element.

no setter, override

iterator → Iterator<E>

An iterator that iterates over the elements of this set.

no setter, override

last → E

The last element.

no setter, override

length → int

The number of elements in this.

no setter, override

propagateNotification ↔ bool

The boolean that indicates if the notification from its children should propagate.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

single → E

Checks that this iterable has only one element, and returns that element.

no setter, override

Methods

add(E element) → bool

Adds value to the set.

override

addAll(Iterable<E> elements) → void

Adds all elements to this set.

override

addListener(VoidCallback listener) → void

Register a closure to be called when the object changes.

inherited

any(bool test(E element)) → bool

Checks whether any element of this iterable satisfies test.

override

asMap() → Map<int, E>

Return a Map where the keys are the indices and the values the elements of this set.

asNotifiableMap() → NotifiableMap<int, E>

Return a NotifiableMap where the keys are the indices and the values the elements of this set.

cast<R>() → Set<R>

Provides a view of this set as a set of R instances.

override

clear() → void

Removes all elements from the set.

override

contains(Object? E) → bool

Whether value is in the set.

override

containsAll(Iterable<Object?> other) → bool

Whether this set contains all the elements of other.

override

difference(Set<Object?> other) → NotifiableSet<E>

Creates a new set with the elements of this that are not in other.

override

dispose() → void

Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).

inherited

elementAt(int index) → E

Returns the indexth element.

override

every(bool test(E element)) → bool

Checks whether every element of this iterable satisfies test.

override

expand<T>(Iterable<T> f(E element)) → Iterable<T>

Expands each element of this Iterable into zero or more elements.

override

firstWhere(bool test(E element), {E orElse()?}) → E

The first element that satisfies the given predicate test.

override

fold<T>(T initialValue, T combine(T previousValue, E element)) → T

Reduces a collection to a single value by iteratively combining each element of the collection with an existing value

override

followedBy(Iterable<E> other) → Iterable<E>

Creates the lazy concatenation of this iterable and other.

override

forEach(void f(E element)) → void

Invokes action on each element of this iterable in iteration order.

override

indexOf(E element, [int start = 0]) → int

Search for element starting from start and return its index.

indexWhere(bool test(E element), [int start = 0]) → int

Iterate over the set and return the first element matching test.

insert(int index, E element) → bool

Insert element in the set at index.

intersection(Set<Object?> other) → NotifiableSet<E>

Creates a new set which is the intersection between this set and other.

override

join([String separator = ""]) → String

Converts each element to a String and concatenates the strings.

override

lastWhere(bool test(E element), {E orElse()?}) → E

The last element that satisfies the given predicate test.

override

lookup(Object? object) → E?

If an object equal to object is in the set, return it.

override

map<T>(T f(E e)) → Iterable<T>

The current elements of this iterable modified by toElement.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyListeners() → void

Call all the registered listeners.

inherited

reduce(E combine(E value, E element)) → E

Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.

override

remove(Object? E) → bool

Removes value from the set.

override

removeAll(Iterable<Object?> elements) → void

Removes each element of elements from this set.

override

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that are notified when the object changes.

inherited

removeWhere(bool test(E element)) → void

Removes all elements of this set that satisfy test.

override

replace(E oldValue, E newValue) → void

Replace the oldValue with newValue if found.

retainAll(Iterable<Object?> elements) → void

Removes all elements of this set that are not elements in elements.

override

retainWhere(bool test(E element)) → void

Removes all elements of this set that fail to satisfy test.

override

singleWhere(bool test(E element), {E orElse()?}) → E

The single element that satisfies test.

override

skip(int count) → Iterable<E>

Creates an Iterable that provides all but the first count elements.

override

skipWhile(bool test(E value)) → Iterable<E>

Creates an Iterable that skips leading elements while test is satisfied.

override

take(int count) → Iterable<E>

Creates a lazy iterable of the count first elements of this iterable.

override

takeWhile(bool test(E value)) → Iterable<E>

Creates a lazy iterable of the leading elements satisfying test.

override

toList({bool growable = true}) → List<E>

Creates a List containing the elements of this Iterable.

override

toNotifiableList({bool growable = true}) → NotifiableList<E>

Create a NotifiableList containing the same elements as this set.

toNotifiableSet() → NotifiableSet<E>

Creates a NotifiableSet containing the same elements as this set.

toSet() → Set<E>

Creates a Set with the same elements and behavior as this Set.

override

toString() → String

A string representation of this object.

inherited

union(Set<E> other) → NotifiableSet<E>

Creates a new set which contains all the elements of this set and other.

override

update(int index, E newValue) → E

Set the element at index to newValue.

where(bool test(E element)) → Iterable<E>

Creates a new lazy Iterable with all elements that satisfy the predicate test.

override

whereType<T>() → Iterable<T>

Creates a new lazy Iterable with all elements that have type T.

override

Operators

operator +(Iterable<E> other) → NotifiableSet<E>

Creates a new NotifiableSet that contains the elements of this set and the elements of other in that order.

operator ==(Object other) → bool

The equality operator.

override

operator [](int index) → E

Returns the element at index.

operator []=(int index, E value) → void

Update the element at index with the new value value.