ValueStream<T> class abstract

Abstract base class for a broadcast Stream with access to the latest emitted value.

Implemented types

Implementers

Constructors

first → Future<T>: The first element of this stream. Returns last emitted value if available, or waits for the first element to come.
no setter
hashCode → int: The hash code for this object.
no setterinherited
innerStream → Stream<T>: Internal stream.
no setter
isClosed → bool: Whether the stream is closed for adding more events.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
valueOrNull → T?: Latest emitted value, or null if no value is available.
no setter

add(T data, {bool skipIfClosed = false, bool skipSame = false, bool skipNull = false}) → bool: Push data to the stream. Ignored if skipIfClosed is true and the stream is closed. Ignored if skipSame is true and data == value. Ignored if skipNull is true and data is null. Return true if value was added.
override
close() → Future<void>: Close the stream. After that, calls to add are no longer allowed.
override
listen(void onData(T data)?, {void onDone()?}) → StreamSubscription<T>: Adds a subscription to this stream.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited