Am 18.04.2012 um 14:15 schrieb Marco:

On 2012-04-18 Wolfgang Schuster 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

On 20-4-2012 17:30, Marco wrote:

On 2012-04-19 Wolfgang Schuster wrote:

Hi Wolfgang,

thanks for the answer. In the first place I also came up with a similar solution to yours. But that's what I meant by ”manually counting” and wanted to avoid. Apparently I missed the obvious, there is no special magic needed:

% doesn't seem to be necessary % \definedataset [test]

\setdataset [test] [foo] [foo=first] \setdataset [test] [foo] [foo=second]

\setdataset [test] [bar] [bar=first] \setdataset [test] [bar] [bar=second] \setdataset [test] [bar] [bar=third]

\starttext foo is: \datasetvariable{test}{foo}{foo}\crlf bar is: \datasetvariable{test}{bar}{bar} \stoptext

Wikified: http://wiki.contextgarden.net/System_Macros/Key_Value_Assignments#Two-pass_d...

Maybe you should add a note about \detupdatase[test][delay=yes] as option. In that case a node is injected and the dataset is extended with 'realpage', 'index' and 'order' information with the realpage being synchronized when the node is flushed. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------