Subject: Re: The empty sequence and xs:boolean
From: "Tony Graham" <tgraham@xxxxxxxxxx>
Date: Fri, 4 May 2012 11:05:55 +0100 (IST)
|
On Fri, May 4, 2012 10:23 am, Andrew Welch wrote:
> Given that:
>
> <xsl:variable name="v1" select="/nothing eq 'a' " as="xs:boolean"/>
>
> will cause an exception if /nothing returns (), what is best / most
> efficient way to construct this variable?
>
> <xsl:variable name="v1" select="/nothing = 'a' " as="xs:boolean"/>
That would work, of course (for well-formed XML).
If you want to be obvious about it:
<xsl:variable name="v1" select="exists(/nothing) and /nothing eq 'a'"
as="xs:boolean" />
Regards,
Tony Graham tgraham@xxxxxxxxxx
Consultant http://www.mentea.net
Mentea 13 Kelly's Bay Beach, Skerries, Co. Dublin, Ireland
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
XML, XSL-FO and XSLT consulting, training and programming
|
Cart
