C# IEnumerator

Unity Engine
,
1

Hi

I’m implementing my own data structure which makes use of C# IEnumerator. I have functions like this which return Status objects:

public IEnumerator Execute()
{
    yield return Status.Suceeded;
}

Then I’m checking the return value like so:

Status result = status.Current as Status;

But in the normal course of execution over this data structure (it’s a tree), status.Current can be null, which should mean that the “as” cast will return null and set result to null. However, when I run this in the Unity iPhone Editor (version 1.0.1f3 (19262), I get an exception:

“InvalidOperationException: Operation is not valid due to the current state of the object”.

After a bit of investigation, I’m assuming the status.Current is null and the as is failing? If this is the case, this isn’t expected C# :?

Edit: The exception is also thrown in none-iPhone Unity 2.5 and 2.1

2

Erm, OK, so maybe in Mono I have to catch the exception?

3

Hello,
could you give some more details for your use case scenario?

4

Sent you a PM