description

# Stream<T>.value constructor Null safety

1. @Since("2.5")

Stream<T>.value(

1. T value

)

Creates a stream which emits a single data event before completing.

This stream emits a single data event of `value` and then completes with a done event.

Example:

    Future<void> printThings(Stream<String> data) async {
      await for (var x in data) {
        print(x);
      }
    }
    printThings(Stream<String>.value("ok")); // prints "ok".

The returned stream is effectively equivalent to one created by `(() async* { yield value; } ())` or `Future<T>.value(value).asStream()`.

## Implementation

    @Since("2.5")
    factory Stream.value(T value) =>
        (_AsyncStreamController<T>(null, null, null, null)
              .._add(value)
              .._closeUnchecked())
            .stream;