Stream<T>.fromIterable constructor
Creates a single-subscription stream that gets its data from data.
The iterable is iterated when the stream receives a listener, and stops iterating if the listener cancels the subscription.
If iterating data throws an error, the stream ends immediately with
that error. No done event will be sent (iteration is not complete), but no
further data events will be generated either, since iteration cannot
continue.
Implementation
factory Stream.fromIterable(Iterable<T> data) {
return new _GeneratedStreamImpl<T>(
() => new _IterablePendingEvents<T>(data));
}