EfficientChild mixin

Superclass constraints
Available extensions

Properties

first → Future<Snapshot>
The first element of this stream.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isBroadcast → bool
Whether this stream is a broadcast stream.
no setterinherited
isEmpty → Future<bool>
Whether this stream contains any elements.
no setterinherited
last → Future<Snapshot>
The last element of this stream.
no setterinherited
length → Future<int>
The number of elements in this stream.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
single → Future<Snapshot>
The single element of this stream.
no setterinherited

Methods

any(bool test(Snapshot element)) → Future<bool>
Checks whether test accepts any element provided by this stream.
inherited
as<T>({String? format}) → Stream<T>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a stream where each snapshot is converted to an object of type T.
asBroadcastStream({void onListen(StreamSubscription<Snapshot> subscription)?, void onCancel(StreamSubscription<Snapshot> subscription)?}) → Stream<Snapshot>
Returns a multi-subscription stream that produces the same events as this.
inherited
asList<T>({String? format}) → Stream<List<T>?>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a stream where each snapshot is converted to a nullable list of objects of type T.
asMap<T>({String? format}) → Stream<Map<String, T>?>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a stream where each snapshot is converted to a nullable map with values of type T.
asNonNullableList<T>({String? format}) → Stream<List<T>>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a stream where each snapshot is converted to a non-nullable list of objects of type T.
asNonNullableMap<T>({String? format}) → Stream<Map<String, T>>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a stream where each snapshot is converted to a non-nullable map with values of type T.
asyncExpand<E>(Stream<E>? convert(Snapshot event)) → Stream<E>
Transforms each element into a sequence of asynchronous events.
inherited
asyncMap<E>(FutureOr<E> convert(Snapshot event)) → Stream<E>
Creates a new stream with each data event of this stream asynchronously mapped to a new event.
inherited
asyncSetPath(String path, Stream childStream) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Updates the content at path for each snapshot in this stream asynchronously with the values from childStream
cast<R>() → Stream<R>
Adapt this stream to be a Stream<R>.
inherited
child(String path) → Stream<Snapshot>
child(String path) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Takes the (grand)child defined by path of each Snapshot in this stream.
contains(Object? needle) → Future<bool>
Returns whether needle occurs in the elements provided by this stream.
inherited
distinct([bool equals(Snapshot previous, Snapshot next)?]) → Stream<Snapshot>
Skips data events if they are equal to the previous data event.
inherited
drain<E>([E? futureValue]) → Future<E>
Discards all data on this stream, but signals when it is done or an error occurred.
inherited
elementAt(int index) → Future<Snapshot>
Returns the value of the indexth data event of this stream.
inherited
every(bool test(Snapshot element)) → Future<bool>
Checks whether test accepts all elements provided by this stream.
inherited
expand<S>(Iterable<S> convert(Snapshot element)) → Stream<S>
Transforms each element of this stream into a sequence of elements.
inherited
firstWhere(bool test(Snapshot element), {Snapshot orElse()?}) → Future<Snapshot>
Finds the first element of this stream matching test.
inherited
fold<S>(S initialValue, S combine(S previous, Snapshot element)) → Future<S>
Combines a sequence of values by repeatedly applying combine.
inherited
forEach(void action(Snapshot element)) → Future<void>
Executes action on each element of this stream.
inherited
handleError(Function onError, {bool test(dynamic error)?}) → Stream<Snapshot>
Creates a wrapper Stream that intercepts some errors from this stream.
inherited
join([String separator = ""]) → Future<String>
Combines the string representation of elements into a single string.
inherited
lastWhere(bool test(Snapshot element), {Snapshot orElse()?}) → Future<Snapshot>
Finds the last element in this stream matching test.
inherited
listen(void onData(Snapshot event)?, {Function? onError, void onDone()?, bool? cancelOnError}) → StreamSubscription<Snapshot>
Adds a subscription to this stream.
inherited
map<S>(S convert(Snapshot event)) → Stream<S>
Transforms each element of this stream into a new stream event.
inherited
mapChildren(dynamic mapper(String key, Snapshot value)) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Updates the content of each child with the value returned by mapper
mapPath(String path, dynamic mapper(Snapshot value)) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pipe(StreamConsumer<Snapshot> streamConsumer) → Future
Pipes the events of this stream into streamConsumer.
inherited
recycle() → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a snapshot stream where each new emitted snapshot reuses the cache of the previous snapshot with the same decoder.
reduce(Snapshot combine(Snapshot previous, Snapshot element)) → Future<Snapshot>
Combines a sequence of values by repeatedly applying combine.
inherited
setPath(String path, dynamic value) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Updates the content at path for each snapshot in this stream.
singleWhere(bool test(Snapshot element), {Snapshot orElse()?}) → Future<Snapshot>
Finds the single element in this stream matching test.
inherited
skip(int count) → Stream<Snapshot>
Skips the first count data events from this stream.
inherited
skipWhile(bool test(Snapshot element)) → Stream<Snapshot>
Skip data events from this stream while they are matched by test.
inherited
switchChildren(Stream mapper(String key, Snapshot value)) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Updates the content of each child with the values of the stream returned by mapper
switchPath(String path, Stream mapper(Snapshot snapshot)) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Updates the content at path for each snapshot in this stream asynchronously with the values from the stream returned by the mapper callback.
take(int count) → Stream<Snapshot>
Provides at most the first count data events of this stream.
inherited
takeWhile(bool test(Snapshot element)) → Stream<Snapshot>
Forwards data events while test is successful.
inherited
timeout(Duration timeLimit, {void onTimeout(EventSink<Snapshot> sink)?}) → Stream<Snapshot>
Creates a new stream with the same events as this stream.
inherited
toList() → Future<List<Snapshot>>
Collects all elements of this stream in a List.
inherited
toSet() → Future<Set<Snapshot>>
Collects the data of this stream in a Set.
inherited
toString() → String
A string representation of this object.
inherited
transform<S>(StreamTransformer<Snapshot, S> streamTransformer) → Stream<S>
Applies streamTransformer to this stream.
inherited
where(bool test(Snapshot event)) → Stream<Snapshot>
Creates a new stream from this stream that discards some elements.
inherited
withDecoder(SnapshotDecoder decoder) → Stream<Snapshot>

Available on Stream<Snapshot>, provided by the SnapshotStreamX extension

Returns a snapshot stream where each snapshot has the decoder decoder.

Operators

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