GroupByStreamTransformer<T, S> class

The GroupBy operator divides an Observable that emits items into an Observable that emits GroupByObservable, each one of which emits some subset of the items from the original source Observable.

GroupByObservable acts like a regular Observable, yet adding a 'key' property, which receives its Type and value from the _grouper Function.

All items with the same key are emitted by the same GroupByObservable.


GroupByStreamTransformer(S grouper(T event))
Constructs a StreamTransformer which groups events from the source Stream and emits them as GroupByObservable.


hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited


bind(Stream<T> stream) → Stream<GroupByObservable<T, S>>
Transforms the provided stream. [...]
cast<RS, RT>() → StreamTransformer<RS, RT>
Provides a StreamTransformer<RS, RT> view of this stream transformer.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toString() → String
Returns a string representation of this object.


operator ==(dynamic other) → bool
The equality operator.