StreamGroup<T> class
Null safety
A collection of streams whose events are unified and sent through a central stream.
Both errors and data events are forwarded through stream. The streams in the group won't be listened to until stream has a listener. Note that this means that events emitted by broadcast streams will be dropped until stream has a listener.
If the StreamGroup is constructed using new StreamGroup, stream will
be single-subscription. In this case, if stream is paused or canceled, all
streams in the group will likewise be paused or canceled, respectively.
If the StreamGroup is constructed using StreamGroup.broadcast,
stream will be a broadcast stream. In this case, the streams in the group
will never be paused and single-subscription streams in the group will never
be canceled. Note that single-subscription streams in a broadcast group
may drop events if a listener is added and later removed. Broadcast
streams in the group will be canceled once stream has no listeners, and
will be listened to again once stream has listeners.
stream won't close until close is called on the group and every stream in the group closes.
Constructors
- StreamGroup()
- Creates a new stream group where stream is single-subscriber.
- StreamGroup.broadcast()
- Creates a new stream group where stream is a broadcast stream.
Properties
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isClosed → bool
-
Whether the group is closed, meaning that no more streams may be added.
read-only
- isIdle → bool
-
Whether this group contains no streams. [...]
read-only
-
onIdle
→ Stream<
void> -
A broadcast stream that emits an event whenever this group becomes idle. [...]
read-only
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
-
stream
→ Stream<
T> -
The stream through which all events from streams in the group are emitted.
read-only
Methods
-
add(
Stream< T> stream) → Future? -
Adds
streamas a member of this group. [...]override -
close(
) → Future -
Closes the group, indicating that no more streams will be added. [...]
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
remove(
Stream< T> stream) → Future? -
Removes
streamas a member of this group. [...] -
toString(
) → String -
A string representation of this object. [...]
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited