Re: [xsl] Re: Seeking an elegant XSLT function to check that a pair of numeric ranges are consecutive

["Wendell Piez wapiez@xxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

    <xsl:function name="r:do-ranges-connect" as="xs:boolean" xmlns:r="
roger.org">
        <xsl:param name="previous-range"/>
        <xsl:param name="current-range"/>
        <xsl:sequence select="
                tokenize($current-range, '-')[last()] ! number() =
                (tokenize($previous-range, '-')[1] ! number() + 1)"/>
    </xsl:function>

NB this returns true from '1-2','3-4-5'.

Enjoy, Wendell


On Sat, May 25, 2024 at 1:05b/PM Roger L Costello costello@xxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Wow! Below is David Carlisle's solution. He solved the problem in a single
> statement. Totally mind-blowing! Pure elegance!
>
> <xsl:function name="f:do-ranges-connect" as="xs:boolean">
>     <xsl:param name="previous-range"/>
>     <xsl:param name="current-range"/>
>
>     <xsl:sequence select="xs:int(replace($previous-range,'.*-',''))+1=
>
> xs:int(replace($current-range,'-.*',''))"/>
> </xsl:function>
>
>
>

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