dont-trust-overvable-return.cs

Console.WriteLine("Starting on thread ".PadLeft(26) + Thread.CurrentThread.ManagedThreadId.ToString());
Func<Unit> writeLineAndReturnUnit = () =>
{
  Console.WriteLine($"Inside Return on thread ".PadLeft(26) + Thread.CurrentThread.ManagedThreadId.ToString());
  return Unit.Default;
};
Observable.Return(writeLineAndReturnUnit(), TaskPoolScheduler.Default)
  .Do(_ => Console.WriteLine("Passing through on thread ".PadLeft(26) + Thread.CurrentThread.ManagedThreadId.ToString()))
  .Subscribe(_ => Console.WriteLine($"Received on thread ".PadLeft(26) + Thread.CurrentThread.ManagedThreadId));