[plt-scheme] Storing the result of a eval while in a continuation

Ehm. I'd like to be able to read the code, evaluate the code with
eval and store the resulting code. To make it sensitive to different
calling contexts, I've decided it is a good idea to make it a function
that is called with a context.

Does that answer your question?

--Hans


Op 14/7/2007 schreef "Grant Rettke" <grettke at acm.org>:

>I am trying to understand the notion of how and why you would
>returns a lambda closure with context as a parameter.
>
>On 7/14/07, Hans Oesterholt-Dijkema <hdnews at gawab.com> wrote:
>> Hi Grant,
>>
>> What is your question? Example of a plugin can be seen below.
>> context is an object providing the current page context and request
>> context of HWiki/PLT Web Server.
>>
>> --Hans
>>
>>
>> (begin
>>   (require (planet "hwikiplugin.scm" ("oesterholt" "hwiki.plt" 1 0)))
>>
>>   (lambda (context)
>>       (let ((sqli (sqli-provider)))
>>         (let ((R (begin
>>          (sqli-query sqli "select page,title,part,time from register
>> where context=$1 order by time desc limit 30" (-> context context))
>>          `(div ((class "lastedits"))
>>               (h1 ,(_ "Last edits for context '~a'" (-> context context)))
>>               ,(append
>>                 `(table ((align "center")) )
>>                  '((tr  (th ((class "page")) "Page")
>>                         (th ((class "part")) "Part")
>>                         (th ((class "title")) "Title")
>>                         (th ((class "time")) "Time")))
>>                  (map (lambda (row)
>>                          (apply (lambda (page title part time)
>>                                   `(tr (td ((class "page")) ,(format
>> "~a" page))
>>                                        (td ((class "part")) ,(format
>> "~a" part))
>>                                       (td ((class "title")) ,(format
>> "~a" title))
>>                                        (td ((class "time")) ,(format
>> "~a" time)))
>>                                    )
>>                                  row))
>>                       (sqli-fetchall sqli)))
>>              ))))
>>           (sqli-closer sqli)
>>           R)))
>>
>>
>>
>> Grant Rettke schreef:
>> > On 7/10/07, Hans Oesterholt-Dijkema <hdnews at gawab.com> wrote:
>> >> This evaluation returns a lambda closure with context as a parameter.
>> >
>> > What problem does that solve? How does that look?
>> >
>> > I've got an idea, but I am not so sure.
>> >
>> >
>>
>
>