EventChannel<T> class final

A buffered event channel with independent readers.

Unread events remain for retainedUpdates updates. Use null to keep them until every reader consumes them.

Constructors

EventChannel({int? retainedUpdates = 8}): Creates a channel that keeps unread events for at most retainedUpdates calls to update, or indefinitely when retainedUpdates is null.

hashCode → int: The hash code for this object.
no setterinherited
hasReaders → bool: Whether the channel has readers.
no setter
isEmpty → bool: Whether the channel buffers no events. See isNotEmpty.
no setter
isNotEmpty → bool: Whether the channel contains events.
no setter
pendingCount → int: Number of buffered events.
no setter
readerLagged → bool: Whether a reader lost events during the last update.
no setter
retainedUpdates → int?: How many maintenance passes an unread event survives, or null for unbounded retention.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

clear() → void: Discards every buffered event.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
reader() → EventReader<T>: Creates a reader positioned at the current end (it will only observe events sent after this call).
readerFromStart() → EventReader<T>: Creates a reader at the oldest buffered event.
send(T event) → void: Appends an event to the channel.
sendDynamic(Object event) → void: Adds event using its runtime type.
toString() → String: A string representation of this object.
inherited
update() → int: Removes consumed and expired events.
writer() → EventWriter<T>: Creates a writer bound to this channel.