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Re: XPath +/- etc not first class functions

  • From: Michael Kay <mike@saxonica.com>
  • To: Benito van der Zander <benito@benibela.de>
  • Date: Mon, 28 Aug 2017 21:47:30 +0100

Re:  XPath +/- etc not first class functions
Yes: perhaps this could be the shortest EXPath spec ever. Just define a binding of the op prefix to the namespace http://expath.org/ns/operators and you're done.

Michael Kay
Saxonica

> On 28 Aug 2017, at 21:15, Benito van der Zander <benito@benibela.de> wrote:
> 
> Hi,
> 
>  perhaps there is an implementation where op:numeric-add is an actual function
> 
> Best,
> Benito 
> 
> 
> 
> Am 28.08.2017 um 21:37 schrieb Dimitre Novatchev:
>> Add() and Subtract() have been part of FXSL
>> (
>> http://fxsl.sourceforge.net/
>> ) since 2001.
>> 
>> There are a lot of other useful functions in FXSL (corresponding to
>> almost all functions in Haskell's Prelude module)  that aren't defined
>> in the XPath/XQuery FO standard.
>> 
>> I must find some time to produce FXSL 3 -- now when its use would be
>> most easy in conjunction with XPath 3.
>> 
>> Cheers,
>> Dimitre
>> 
>> On Sun, Aug 27, 2017 at 11:00 PM, Ihe Onwuka 
>> <ihe.onwuka@gmail.com>
>>  wrote:
>> 
>>> The examples at
>>> 
>>> 
>>> https://www.w3.org/TR/xpath-functions-31/#func-fold-left
>>> 
>>> 
>>> would seem to suggest that primitives such as + and - cannot be passed as
>>> values.
>>> 
>>> Correct?
>>> 
>> 
>> 
>> 
> 



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