is there any way to cancel a dart Future?

Question

In a Dart UI, I have a button [submit] to launch a long async request. The [submit] handler returns a Future. Next, the button [submit] is replaced by a button [cancel] to a

Answer 1

my 2 cents worth...

class CancelableFuture {
  bool cancelled = false;
  CancelableFuture(Duration duration, void Function() callback) {
    Future.delayed(duration, () {
      if (!cancelled) {
        callback();
      }
    });
  }

  void cancel() {
    cancelled = true;
  }
}