NotifiableSet<E> class Null safety

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
Available Extensions

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
Returns the first element. [...]
read-only
hashCode → int
The hash code for this object. [...]
read-only
hasListeners → bool
Whether any listeners are currently registered. [...]
@protected, read-only, inherited
isEmpty → bool
Returns true if there are no elements in this collection. [...]
read-only
isNotEmpty → bool
Returns true if there is at least one element in this collection. [...]
read-only
iterator → Iterator<E>
An iterator that iterates over the elements of this set. [...]
read-only
last → E
Returns the last element. [...]
read-only
length → int
Returns the number of elements in the iterable. [...]
read-only
propagateNotification ↔ bool
The boolean that indicates if the notification from its children should propagate. [...]
read / write
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
single → E
Checks that this iterable has only one element, and returns that element. [...]
read-only

Methods

add(E element) → bool
Adds value to the set. [...]
addAll(Iterable<E> elements) → void
Adds all elements to this set. [...]
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. [...]
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. [...]
clear() → void
Removes all elements from the set.
contains(Object? E) → bool
Whether value is in the set.
containsAll(Iterable<Object?> other) → bool
Whether this set contains all the elements of other.
difference(Set<Object?> other) → NotifiableSet<E>
Creates a new set with the elements of this that are not in other. [...]
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 and removeListener will throw after the object is disposed). [...]
@mustCallSuper, inherited
elementAt(int index) → E
Returns the indexth element. [...]
every(bool test(E element)) → bool
Checks whether every element of this iterable satisfies test. [...]
expand<T>(Iterable<T> f(E element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements. [...]
firstWhere(bool test(E element), {E orElse()?}) → E
Returns the first element that satisfies the given predicate test. [...]
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 [...]
followedBy(Iterable<E> other) → Iterable<E>
Returns the lazy concatenation of this iterable and other. [...]
forEach(void f(E element)) → void
Invokes action on each element of this iterable in iteration order.
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. [...]
join([String separator = ""]) → String
Converts each element to a String and concatenates the strings. [...]
lastWhere(bool test(E element), {E orElse()?}) → E
Returns the last element that satisfies the given predicate test. [...]
lookup(Object? object) → E?
If an object equal to object is in the set, return it. [...]
map<T>(T f(E e)) → Iterable<T>
The current elements of this iterable modified by toElement. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
notifyListeners() → void
Call all the registered listeners. [...]
@protected, @visibleForTesting, 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. [...]
remove(Object? E) → bool
Removes value from the set. [...]
removeAll(Iterable<Object?> elements) → void
Removes each element of elements from this set.
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.
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. [...]
retainWhere(bool test(E element)) → void
Removes all elements of this set that fail to satisfy test.
singleWhere(bool test(E element), {E orElse()?}) → E
Returns the single element that satisfies test. [...]
skip(int count) → Iterable<E>
Returns an Iterable that provides all but the first count elements. [...]
skipWhile(bool test(E value)) → Iterable<E>
Returns an Iterable that skips leading elements while test is satisfied. [...]
take(int count) → Iterable<E>
Returns a lazy iterable of the count first elements of this iterable. [...]
takeWhile(bool test(E value)) → Iterable<E>
Returns a lazy iterable of the leading elements satisfying test. [...]
toList({bool growable = true}) → List<E>
Creates a List containing the elements of this Iterable. [...]
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. [...]
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. [...]
update(int index, E newValue) → E
Set the element at index to newValue. [...]
where(bool test(E element)) → Iterable<E>
Returns a new lazy Iterable with all elements that satisfy the predicate test. [...]
whereType<T>() → Iterable<T>
Returns a new lazy Iterable with all elements that have type T. [...]

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. [...]
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.