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Re: XSLT repetition constructs

Subject: Re: XSLT repetition constructs
From: "Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 7 Mar 2019 11:55:25 -0000
Re:  XSLT repetition constructs
A good simple use case for fold-left() is to accumulate a running total, i.e.
turn (1,2,3,4) into (1,3,6,10).

I have to confess I always find it difficult to come up with a convincing use
case for fold-right().

Michael Kay

> On 7 Mar 2019, at 11:45, Martin Honnen martin.honnen@xxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> Am 07.03.2019 um 12:23 schrieb Mukul Gandhi gandhi.mukul@xxxxxxxxx:
>>     I've updated the document I've prepared, at the same link
(http://gandhimukul.tripod.com/xslt/xslt_repetition_constructs.pdf) discussing
fold-left() and fold-right() functions as well.
> The examples for those two functions seem a bit artificial as the problem
they solve could be easily solved with
>    string-join($inpValues, '.')
> respectively
>   string-join(reverse($inpValues), '.')
> in earlier XPath versions without any need for higher-order functions and
recursion or just as well at the XSLT level with
>   <xsl:value-of select="$inputValues" separator="."/>
> respectively
>   <xsl:value-of select="reverse($inputValues)" separator="."/>

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