timestamp method

Observable<Timestamped<T>> timestamp ()

Wraps each item emitted by the source Observable in a Timestamped object that includes the emitted item and the time when the item was emitted.

Example

new Observable.just(1)
   .timestamp()
   .listen((i) => print(i)); // prints 'TimeStamp{timestamp: XXX, value: 1}';

Implementation

Observable<Timestamped<T>> timestamp() {
  return transform(new TimestampStreamTransformer<T>());
}