Is Yield Return == IEnumerable & IEnumerator?

问题:

Is yield return a shortcut for implementing IEnumerable and IEnumerator?

回答1:

Yes, it is.

You can find out a lot more about it in chapter 6 of my book, C# in Depth. Fortunately chapter 6 is available for free from Manning's web site.

I also have two other articles on the book's web site.

Feedback welcome.

回答2:

To add to the link-fest, Raymond Chen did a nice little series on C# iterators a few months ago:

• http://blogs.msdn.com/oldnewthing/archive/2008/08/12/8849519.aspx
• http://blogs.msdn.com/oldnewthing/archive/2008/08/13/8854601.aspx
• http://blogs.msdn.com/oldnewthing/archive/2008/08/14/8862242.aspx
• http://blogs.msdn.com/oldnewthing/archive/2008/08/15/8868267.aspx

回答3:

Yes. See the following for a starter

http://msdn.microsoft.com/en-us/library/dscyy5s0.aspx