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.

Inheritance

Constructors

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

Properties

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

Methods

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

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited