StreamSet<E> class
StreamSet wraps a Set and adds functionality to each relevant method to notify any subscribed listeners of changes made to the set.
- Inheritance
-
- Object
- StreamValue<
Set< E> > - StreamEventProvider<
Set< E> , CollectionEvent<int, E> > - StreamCollection<
Set< E> , int, E> - StreamSet
- Implemented types
-
- Set<
E>
- Set<
- Available Extensions
Constructors
-
StreamSet({Set<
E> ? value, OnUpdate<Set< ? onUpdate, OnEvent<E> >CollectionEvent< ? onEvent, OnChange<int, E> >CollectionChangeEvent< ? onChange})int, E> > - StreamSet wraps a Set and adds functionality to each relevant method to notify any subscribed listeners of changes made to the set.
-
StreamSet.from(Iterable elements, {OnUpdate<
Set< ? onUpdate, OnEvent<E> >CollectionEvent< ? onEvent, OnChange<int, E> >CollectionChangeEvent< ? onChange})int, E> > -
Creates a StreamSet that contains all
elements.factory -
StreamSet.identity({OnUpdate<
Set< ? onUpdate, OnEvent<E> >CollectionEvent< ? onEvent, OnChange<int, E> >CollectionChangeEvent< ? onChange})int, E> > -
Creates a StreamSet that wraps an empty identity Set.
factory
-
StreamSet.of(Iterable<
E> elements, {OnUpdate<Set< ? onUpdate, OnEvent<E> >CollectionEvent< ? onEvent, OnChange<int, E> >CollectionChangeEvent< ? onChange})int, E> > -
Creates a StreamSet from
elements.factory
Properties
- first → E
-
The first element.
no setteroverride
- hasChangeEvent → bool
-
Returns
trueif there are any active change listeners or if onChange is set.no setterinherited - hasChangeListener → bool
-
Returns
trueif there are any active change listeners.no setterinherited - hasEvent → bool
-
Returns
trueif there are any active event listeners or if onEvent is set.no setterinherited - hasEventListener → bool
-
Returns
trueif there are any active event listeners.no setterinherited - hashCode → int
-
The hash code for this object.
no setterinherited
- hasListener → bool
-
Returns
trueif there are any active listeners.no setterinherited - hasUpdate → bool
-
Returns
trueif there are any active update listeners or if onUpdate is set.no setterinherited - isEmpty → bool
-
Whether this collection has no elements.
no setteroverride
- isNotEmpty → bool
-
Whether this collection has at least one element.
no setteroverride
- isObserved → bool
-
Returns
trueif there are any active listeners or if onUpdate is notnull.no setterinherited -
iterator
→ Iterator<
E> -
An iterator that iterates over the elements of this set.
no setteroverride
- last → E
-
The last element.
no setteroverride
- length → int
-
The number of elements in this.
no setteroverride
- numberOfChangeListeners → int
-
Returns the number of active change listeners.
no setterinherited
- numberOfEventListeners → int
-
Returns the number of active event listeners.
no setterinherited
- numberOfListeners → int
-
Returns the number of active listeners.
no setterinherited
-
onChange
↔ OnChange<
CollectionChangeEvent< ?int, E> > -
A synchronous event called individually for every element added,
removed, or updated in the collection.
getter/setter pairinherited
-
onEvent
↔ OnEvent<
CollectionEvent< ?int, E> > -
Called when an element is added, removed, or updated in the
list/map before onUpdate is called and before the listeners
are notified of the new value.
getter/setter pairinherited
-
onUpdate
↔ OnUpdate<
Set< ?E> > -
Called after value is updated, before the listeners are notified.
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- single → E
-
Checks that this iterable has only one element, and returns that element.
no setteroverride
-
value
↔ Set<
E> -
The value being observed.
getter/setter pairinherited
- wasDisposed ↔ bool
-
Set to
truewhen dispose is called.getter/setter pairinherited
Methods
-
add(
E value, {bool notifyListeners = true}) → bool -
Adds
valueto the set.override -
addAll(
Iterable< E> elements, {bool notifyListeners = true}) → void -
Adds all
elementsto this set.override -
addChangeListener(
OnChange< CollectionChangeEvent< onChange) → StreamSubscription<int, E> >CollectionChangeEvent< int, E> > -
Registers a new StreamSubscription that provides a
CollectionChangeEventdenoting when an element has been added, removed, or updated in the collection.inherited -
addEventListener(
OnEvent< CollectionEvent< onEvent) → StreamSubscription<int, E> >CollectionEvent< int, E> > -
Registers a new StreamSubscription that provides a
CollectionEvent denoting when any elements have been added,
removed, or updated in the collection.
inherited
-
addListener(
OnUpdate< Set< onUpdate) → StreamSubscription<E> >Set< E> > -
Creates, stores and returns a listener.
inherited
-
any(
bool test(E element)) → bool -
Checks whether any element of this iterable satisfies
test.override -
cast<
R> () → Set< R> -
Provides a view of this set as a set of
Rinstances.override -
clear(
{bool notifyListeners = true}) → void -
Removes all elements from the set.
override
-
contains(
Object? value) → bool -
Whether
valueis in the set.override -
containsAll(
Iterable< Object?> other) → bool -
Whether this set contains all the elements of
other.override -
difference(
Set< Object?> other) → Set<E> -
Creates a new set with the elements of this that are not in
other.override -
dispose(
) → void -
Cancels any active listeners and closes the stream.
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)) → 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, E)) → 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)) → void -
Invokes
actionon each element of this iterable in iteration order.override -
intersection(
Set< Object?> other) → Set<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
objectis in the set, return it.override -
map<
T> (T f(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
-
notifyAllListeners(
CollectionEventType type, int? key, E? value) → void -
Notifies every active update, event, and change listener, as well as
the onUpdate, onEvent, and onChange parameters of an event
affecting a single element.
inherited
-
notifyChangeListeners(
CollectionChangeEvent< int, E> event) → void -
Notifies all subscribed changes listeners of an
event.inherited -
notifyEventListeners(
CollectionEvent< int, E> event) → void -
Notifies all subscribed event listeners of an
event.inherited -
notifyListeners(
Set< E> event) → void -
Notifies all subscribed listeners of an
event.inherited -
reduce(
E combine(E, E)) → E -
Reduces a collection to a single value by iteratively combining elements
of the collection using the provided function.
override
-
remove(
Object? value, {bool notifyListeners = true}) → bool -
Removes
valuefrom the set.override -
removeAll(
Iterable< Object?> elements, {bool notifyListeners = true}) → void -
Removes each element of
elementsfrom this set.override -
removeChangeListener(
) → void -
Cancels and removes a change listener.
inherited
-
removeEventListener(
) → void -
Cancels and removes an event listener.
inherited
-
removeListener(
) → void -
Cancels and removes a StreamSubscription.
inherited
-
removeWhere(
Test< E> test, {bool notifyListeners = true}) → void -
Removes all elements of this set that satisfy
test.override -
retainAll(
Iterable< Object?> elements, {bool notifyListeners = true}) → void -
Removes all elements of this set that are not elements in
elements.override -
retainWhere(
Test< E> test, {bool notifyListeners = true}) → void -
Removes all elements of this set that fail to satisfy
test.override -
setValue(
Set< E> value) → void -
Sets the observable value to
valuewithout notifying the event listeners.inherited -
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
countelements.override -
skipWhile(
bool test(E value)) → Iterable< E> -
Creates an
Iterablethat skips leading elements whiletestis satisfied.override -
take(
int count) → Iterable< E> -
Creates a lazy iterable of the
countfirst 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
-
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) → Set<E> -
Creates a new set which contains all the elements of this set and
other.override -
where(
bool test(E)) → 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 ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
castFrom<
S, T> (Set< S> source, {Set<R> newSet<R>()?, OnUpdate<Set< ? onUpdate, OnEvent<T> >CollectionEvent< ? onEvent, OnChange<int, T> >CollectionChangeEvent< ? onChange}) → StreamSet<int, T> >T> -
Adapts
sourceto be aStreamSet<T>.override