SetChangeNotifier<T> class Null safety

Inheritance
Mixed in types
Available Extensions

Constructors

SetChangeNotifier([Set<T>? backingSet])

Properties

first → T
Returns the first element.
read-onlyinherited
hashCode int
The hash code for this object.
read-onlyinherited
hasListeners bool
Whether any listeners are currently registered.
@protectedread-onlyinherited
isEmpty bool
Whether this collection has no elements.
read-onlyinherited
isNotEmpty bool
Whether this collection has at least one element.
read-onlyinherited
iterator Iterator<T>
Provides an iterator that iterates over the elements of this set.
read-onlyoverride
last → T
Returns the last element.
read-onlyinherited
length int
Returns the number of elements in the iterable.
read-onlyoverride
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited
single → T
Checks that this iterable has only one element, and returns that element.
read-onlyinherited

Methods

add(T value) bool
Adds value to the set. Listeners are only notified if the set changes.
override
addAll(Iterable<T> elements) → void
Adds all elements to this set. Listeners are notified after all values have been added.
override
addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
any(bool test(T element)) bool
Checks whether any element of this iterable satisfies test.
inherited
cast<R>() Set<R>
Provides a view of this set as a set of R instances.
inherited
clear() → void
Removes all elements in the set. Listeners are notified after all valuse have been removed.
override
contains(Object? element) bool
Returns true if value is in the set.
override
containsAll(Iterable<Object?> other) bool
Whether this set contains all the elements of other.
inherited
difference(Set<Object?> other) Set<T>
Creates a new set with the elements of this that are not in other.
inherited
dispose() → void
Discards the internal resources used by the object. After this is called, the object is not in a usable state and should be discarded.
@mustCallSuperoverride
elementAt(int index) → T
Returns the indexth element.
inherited
every(bool f(T element)) bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> f(T element)) Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
firstWhere(bool test(T value), {T orElse()?}) → T
Returns the first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, T element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<T> other) Iterable<T>
Returns the lazy concatenation of this iterable and other.
inherited
forEach(void f(T element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
intersection(Set<Object?> other) Set<T>
Creates a new set which is the intersection between this set and other.
inherited
join([String separator = ""]) String
Converts each element to a String and concatenates the strings.
inherited
lastWhere(bool test(T value), {T orElse()?}) → T
Returns the last element that satisfies the given predicate test.
inherited
lookup(Object? element) → T?
If an object equal to element is in the set, return it.
override
map<T>(T f(T element)) Iterable<T>
The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
notifyListeners() → void
Notify all the listeners, respecting our paused state falg
inherited
pauseNotifications<T>(ChangeHandler<T> handler, [bool notifyAfter = false]) → T
Pause notifications until after a synchronous handler has completed. If notifyAfter is true, then listeners will automatically be notified after the callback completes. Otherwise, you must notify the listeners;
inherited
pauseNotificationsAsync<T>(AsyncChangeHandler<T> handler, [bool notifyAfter = false]) Future<T>
Pause notifications until after an asynchronous handler has completed. If notifyAfter is true, then listeners will automatically be notified after the callback completes. Otherwise, you must notify the listeners;
inherited
reduce(T combine(T value, T element)) → T
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
inherited
remove(Object? value) bool
Removes value from the set. Returns true if value was in the set. Only notifies the listeners if the set was changed.
override
removeAll(Iterable<Object?> elements) → void
Removes each element of elements from this set. Listeners are notified after all values have been removed.
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(T element)) → void
Removes all elements of this set that satisfy test Listeners are notified after all values have been removed.
override
retainAll(Iterable<Object?> elements) → void
Removes all elements of this set that are not elements in elements. Listeners are notified after all values have been removed.
override
retainWhere(bool test(T element)) → void
Removes all elements of this set that fail to satisfy test Listeners are notified after all values have been removed.
override
singleWhere(bool test(T value), {T orElse()?}) → T
Returns the single element that satisfies test.
inherited
skip(int n) Iterable<T>
Returns an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(T value)) Iterable<T>
Returns an Iterable that skips leading elements while test is satisfied.
inherited
take(int n) Iterable<T>
Returns a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(T value)) Iterable<T>
Returns a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) List<T>
Creates a List containing the elements of this Iterable.
inherited
toSet() Set<T>
Creates a Set with the same elements as this Set.
override
toString() String
A string representation of this object.
inherited
union(Set<T> other) Set<T>
Creates a new set which contains all the elements of this set and other.
inherited
where(bool f(T element)) Iterable<T>
Returns a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() Iterable<T>
Returns a new lazy Iterable with all elements that have type T.
inherited

Operators

operator ==(Object other) bool
The equality operator.
inherited