[image: garthwaynes-praising.gif]
On Fri, Jul 22, 2022 at 3:10 PM Jos De Roo <josderoo@gmail.com> wrote:
> Exactly!
> Another way that would also work with Cwm is
>
> @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
> @prefix math: <http://www.w3.org/2000/10/swap/math#>.
> @prefix : <http://example.org/ns#>.
>
> :Collection :parts (:part1 :part2 :part3).
>
> {
> ?subject :parts ?parts.
> ?parts rdf:first ?part.
> ?parts rdf:rest ?rest.
> ?rest math:memberCount ?count.
> }
> =>
> {
> ?part :order ?count .
> ?x :parts ?rest .
> }.
>
> giving
>
> $ cwm /tmp/count.n3 --think --data
> #Processed by Id
> # using base file:///tmp/count.n3
> @prefix : <http://example.org/ns#> .
>
> :Collection :parts (
> :part1
> :part2
> :part3 ) .
>
> :part1 :order 2 .
>
> :part2 :order 1 .
>
> :part3 :order 0 .
>
>
> Jos
>
> -- https://josd.github.io
>
>
> On Fri, Jul 22, 2022 at 8:54 PM William Van Woensel <
> william.vanwoensel@gmail.com> wrote:
>
>> Hi Patrick
>>
>> Try list:iterate
>> <http://eulersharp.sourceforge.net/2003/03swap/eye-builtins.html>. See
>> http://ppr.cs.dal.ca:3002/n3/editor/s/2rJmxYti for an example.
>>
>> (This is a new builtin introduced by the community group and supported by
>> eye and jen3.)
>>
>>
>> W
>>
>> On Jul 22, 2022, at 9:49 AM, Patrick Hochstenbach <
>> Patrick.Hochstenbach@ugent.be> wrote:
>>
>> Hi all,
>>
>> I need a way to count things using N3 but I don't know yet how this could
>> be done.
>> E.g. as data input I have:
>>
>> :Collection :parts (:part1 :part2 :part3 ...).
>>
>> As output I would like to get
>>
>> :part1 :order 1 .
>> :part2 :order 2.
>> :part3 :order 3.
>> ...
>>
>> I know I can loop over a list using the list:member:
>>
>> @prefix list: <http://www.w3.org/2000/10/swap/list#>.
>>
>> {
>> ?subject :parts ?parts .
>> ?parts list:member ?part .
>> }
>> =>
>> {
>> ?part :order 1 .
>> }.
>>
>> But I fail to find a way to add a counter for order. Any hints available?
>>
>> BR
>>
>> Patrick
>>
>>
>>
