Perfect. Feel free to check out XQuery 3.1 as well:

http://docs.basex.org/wiki/XQuery_3.1

On Fri, Oct 23, 2015 at 3:53 PM, Ron Katriel <rkatriel@mdsol.com> wrote:
> Hi Cristian,
>
> I tried the nested for loops below and it performed as expected
> (monotonically increasing count).
>
> There are a a lot of great enhancements in XQuery 3.0. Thanks for pointing
> that out!
>
> Thanks,
> Ron
>
>
> for $n in (1 to 10)[. mod 2 = 1]
> for $m in (1 to 10)[. mod 2 = 0]
> count $c
> return <number count="{ $c }" odd="{ $n }" even="{ $m }"/>
>
>
> On October 23, 2015 at 9:36:35 AM, Christian Grün
> (christian.gruen@gmail.com) wrote:
>
> Hi Ron,
>
> Out of interest: did you have a look at the "count" clause [1]?
>
> Christian
>
> [1] http://docs.basex.org/wiki/XQuery_3.0#Enhanced_FLWOR_Expressions
>
>
>
> On Fri, Oct 23, 2015 at 12:02 AM, Ron Katriel <rkatriel@mdsol.com> wrote:
>> Thanks all!
>>
>> I went with the solution suggested by Christian. It is simple, efficient,
>> and solves my problem (starting at 1 is fine). The GFLWOR approach is
>> nice,
>> except that I have two nested for loops so it produces two counts instead
>> of
>> one (and there is no straightforward way to combine them into a single
>> monotonically increasing number).
>>
>> Best,
>> Ron
>>
>> On October 22, 2015 at 5:47:53 AM, Marc van Grootel
>> (marc.van.grootel@gmail.com) wrote:
>>
>> Hi,
>>
>> Wouldn't clj-ds [1] be of any help in this? It has support for
>> transients.I believe that Exist uses this somewhere in their code not
>> sure where. I think it makes use of these Atomic* objects under the
>> hood but providing a "functional" facade. btw I'm not speaking from
>> experience with this library but I do have it on my longlist.
>>
>> [1]: https://github.com/krukow/clj-ds
>>
>> On Thu, Oct 22, 2015 at 9:38 AM, Christian Grün
>> <christian.gruen@gmail.com> wrote:
>>> Hi Rob,
>>>
>>> A short variant of your approach could look like this:
>>>
>>> import module namespace counter =
>>> 'java.util.concurrent.atomic.AtomicInteger';
>>> for $i in 1 to 10
>>> return counter:incrementAndGet()
>>>
>>> As you already indicated, it violates the functional programming
>>> design, so I would surely recommend everyone to use the GFLWOR "at" or
>>> "count" clause (or possibly fold-left, etc.)
>>>
>>> And hi Ron,
>>>
>>> Do you need to start with an existing counter when running your query,
>>> or is it sufficient to start with 1?
>>>
>>> Christian
>>>
>>>
>>> On Thu, Oct 22, 2015 at 9:07 AM, Rob Stapper <r.stapper@lijbrandt.nl>
>>> wrote:
>>>> Hi Ron,
>>>>
>>>> Maybe the attached codes-nippet is useful to you.
>>>> It is an example of stateful programming, which isn't compliant with the
>>>> functional programming concept but, in some cases, can be very useful.
>>>>
>>>> Hopes it helps,
>>>> Rob Stapper
>>>>
>>>> PS. put the module-file in a subdirectory: "counter", in your
>>>> basex-repo-directory.
>>
>>
>>
>> --
>> --Marc