complete method

void complete (
  1. [FutureOr<T>? value]
)

Completes future with the supplied values.

The value must be either a value of type T or a future of type Future<T>. If the value is omitted or null, and T is not nullable, the call to complete throws.

If the value is itself a future, the completer will wait for that future to complete, and complete with the same result, whether it is a success or an error.

Calling complete or completeError must be done at most once.

All listeners on the future are informed about the value.

Implementation

void complete([FutureOr<T>? value]);

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.13.0/dart-async/Completer/complete.html