Technically it lives in your session. The closure (not 100% sure that's the
correct term):
() => {cnt = cnt + 1; SetHtml("cnt_id", Text( cnt.toString))}
Creates a function object (of type
http://www.scala-lang.org/docu/files/api/scala/Function0.html) that is
installed in your session via the "a()" method in Helpers. The object
carries a reference to the instance of the cnt variable that was in scope
when the closure was defined. When you reload your page you're really
creating a whole new HelloFormAjax instance, with its own new cnt instance
and a new closure instance. This is just the tip of the awesome power of
closures in Scala :)
Derek
On Wed, Oct 22, 2008 at 2:27 PM, didi <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> im Playing around with Lift Snippets and die Ajax Examples provided in
> the Demo.
> I've learned from the FAQ the a Snippet default lives for a request
> time.
>
> Now i have following Ajax example:
>
> class HelloFormAjax {
> def sample = {
> var cnt = 0
>
> <span>
> {
> a(() => {cnt = cnt + 1; SetHtml("cnt_id", Text( cnt.toString))},
> <span>Click me to increase the count
> (currently <span id='cnt_id'>0</span>)</span>)
> }</span>
> }
> }
>
> Here is what i observed using Java Remote Debugger connecting my
> Eclipse to Jetty:
>
> The cnt = 0 expression is executed once a request (Reload of the
> Browser Page).
>
> Now I wonder where the cnt var lives during the Ajax calls.
>
> Thanks
> Christian
>
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~----------~----~----~----~------~----~------~--~---
