[REBOL] Re: disappearing data?
From: joel:neely:fedex at: 13-Nov-2000 4:39
Hi, Ryan,
[rebol-bounce--rebol--com] wrote:
> I've created an object with a function which converts data in another
> object into XML. But the function will only work ONCE. Why?
Because your Markup-Data function steps Xml-Tags through its series
value (initialized to a 5-element block) and then leaves it positioned
at the end. Therefore, on the next call, the Length? is zero.
Either use a local (to the function) variable, initialized as in
working-xml-tags: copy xml-tags
and iterate over the copy, or add
xml-tags: head xml-tags
at the end of Markup-Data.
-jn-
> Here is
> the console session...
>
> >> translate-message: make object! [
> [
> [ xml-tags: [
> [ ["author" "/author"]
> [ ["subject" "/subject"]
> [ ["date" "/date"]
> [ ["content" "/content"]
> [ ["messageID" "/messageID"]
> [ ]
> [
> [ markup-data: func [
> [ data [object!]
> [ ][
...
> [ for x 1 (length? xml-tags) 1 [
...
> [ xml-tags: next xml-tags
> [ object-data: next object-data
> [ append output made-tag
> [ output
> [ ]
> [ ]
> [ ]
> >>
Your function Markup-Data essentially steps Xml-Tags through its
series value, leaving it positioned at the end of the series.
Since you never reset
