# “LifeAfterYield” (Solution)

## Answer

```
BarBaz
```

## Explanation

The code from the problem will be transformed in the following code (some part of the code specifically removed for better understanding):

```csharp
private sealed class FooEnumerable : 
    IEnumerable<string>, IEnumerator<string>
{
  private int state;
  public string Current { get; private set; }

  object IEnumerator.Current
  {
    get { return Current; }
  }

  public FooEnumerable(int state)
  {
    this.state = state;
  }

  public IEnumerator<string> GetEnumerator()
  {
    FooEnumerable fooEnumerable;
    if (state == -2)
    {
      state = 0;
      fooEnumerable = this;
    }
    else
      fooEnumerable = new FooEnumerable(0);
    return fooEnumerable;
  }

  IEnumerator IEnumerable.GetEnumerator()
  {
    return GetEnumerator();
  }

  bool IEnumerator.MoveNext()
  {
    switch (state)
    {
      case 0:
        Current = "Bar";
        state = 1;
        return true;
      case 1:
        state = -1;
        Console.WriteLine("Baz");
        break;
    }
    return false;
  }

  void IEnumerator.Reset()
  {
    throw new NotSupportedException();
  }

  void IDisposable.Dispose()
  {
  }
}

IEnumerable<string> Foo()
{
  return new FooEnumerable(-2);
}

void Main()
{
  var enumerator = Foo().GetEnumerator();
  while (enumerator.MoveNext())
    Console.Write(enumerator.Current);
}
```

[Problem](https://andreyakinshin.gitbook.io/problembookdotnet/en/linq/lifeafteryield-p)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://andreyakinshin.gitbook.io/problembookdotnet/en/linq/lifeafteryield-s.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.