Am 18.04.2012 um 14:15 schrieb Marco:
> On 2012-04-18 Wolfgang Schuster <schuster.wolfg...@googlemail.com> wrote:
>
>> The following works with the current beta, you can find another example in
>> core-dat.mkiv.
>>
>> […]
>
> Thanks a lot. One more question: How to address the last element
> without manually keeping track of how often it was saved? Anyhow, I
> am just interested in the last saved value. A solution which simply
> overwrites the old value every time would also be fine.
>
> \starttext
> \definedataset [test]
> \setdataset [test] [foo=first]
> \setdataset [test] [foo=second]
>
> % I don't know that element "2" is the last
> foo is: \datasetvariable{test}{2}{foo}
>
> % what I need
> % foo is: \datasetvariable{test}{"last"}{foo}
> \stoptext
\definedataset[test]
\newcounter\testcounter % optional because \increment checks if the command is
defined
\startsetups dataset:test
\doifvariable{test}{foo}
{
\doglobal\increment\testcounter
\setdataset[test][foo=\getvariable{test}{foo}]
}
\stopsetups
\setvariables[test][set=\texsetup{dataset:test}]
\starttext
\setvariables[test][foo=first]
\setvariables[test][foo=second]
foo is: \datasetvariable{test}{\testcounter}{foo}
\stoptext
Wolfgang
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