[xquery-talk] arrow operator

[Christian Grün]

Hi Wouter,

The arrow operator takes all items of the left side as first argument,
whereas the simple map operator processes all items one by one:

  (1,2,3) => count()   → 3
  (1,2,3) ! count(.)   → 1 1 1

Cheers,
Christian


On Tue, Aug 1, 2017 at 2:27 PM, W.S. Hager <wshager at gmail.com> wrote:
> Hi,
>
> Is there any advantage to using the 3.1 arrow operator over the simple map
> operator?
>
> $string => upper-case() => normalize-unicode() => tokenize("\s+")
>
> versus
>
> $string ! upper-case(.) ! normalize-unicode(.) ! tokenize(.,"\s+")
>
> Thanks,
> Wouter
>
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