What does "Access to modified closure" mean?

It has to do with scoping rules of closures. If you were store the delegate
and execute it later, it would not behave as you might expect.

For a more detailed discussion, see the following blog entries:
http://blogs.msdn.com/abhinaba/archive/2005/10/18/482180.aspx

http://blogs.msdn.com/oldnewthing/archive/2006/08/02/686456.aspx
http://blogs.msdn.com/oldnewthing/archive/2006/08/03/687529.aspx
http://blogs.msdn.com/oldnewthing/archive/2006/08/04/688527.aspx



"Gabriel Lozano-Moran" <gabriel.lozano-moran@hotmail.com> wrote in message
news:fpe6n6$t0h$1@is.intellij.net...

Hello

>

I have the following code:

>

01 foreach(TimeZoneInfo info in TimeZoneInfo.GetSystemTimeZones())
02 {
03 if(list.Count(t => t.Name == info.Id) == 0)
04 {
05 result = false;
06 }
07 }

>

In line 03 I see that info is underlined and the message is "Access to
modified closure" and I get the refactoring option to copy it to a local
variable resulting in this:

>

01 foreach(TimeZoneInfo info in TimeZoneInfo.GetSystemTimeZones())
02 {
03 TimeZoneInfo info1 = info;
04 if(list.Count(t => t.Name == info1.Id) == 0)
05 {
06 result = false;
07 }
08 }

>

What exactly is meant with "Access to modified closure"?

>

Gabriel Lozano-Moran

Is it still a valid warning if using value types (i.e. struct)?

Hello Francois,

Yes, this is still a valid warning for value types. Thank you!

Andrey Serebryansky
Senior Support Engineer
JetBrains, Inc
http://www.jetbrains.com
"Develop with pleasure!"

Is it still a valid warning if using value types (i.e. struct)?

---
Original message URL:
http://devnet.jetbrains.net/message/5274174#5274174

Or see this:

http://qualityofdata.com/2010/12/27/resharper-access-to-the-modified-closure-simplified/

Check the post from the above link. It describes it with examples.