<xsl:variable name="foo" select = "xxx"/>
<xsl:variable name="bar" select= "yyy"/>
<xsl:variable name="foo1"/>
<xsl:variable name="bar1" select= "'world'"/>
<xsl:value-of select="($foo,$bar)[1]"/> <!--first-->
<xsl:value-of select="(string($foo1),$bar1)[1]"/><!--Second-->
First worked but second did not work
I was expecting "World" to be output to the result ..
On Thu, Feb 5, 2015 at 1:36 PM, Michael Kay mike(_at_)saxonica(_dot_)com
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
If $a and $b have cardinality zero-or-one then ($a, $b)[1] does what you want
(and is a common programming idiom).
But be careful, it doesn't work if either $a or $b can contain more than one
item.
Also, it tests whether $a exists, which isn't the same as your example of
testing the effective boolean value of string(@a).
Michael Kay
Saxonica
mike(_at_)saxonica(_dot_)com
+44 (0) 118 946 5893
On 5 Feb 2015, at 18:32, Mailing Lists Mail daktapaal(_at_)gmail(_dot_)com
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hey All,
I have a logic that says :
if $a found , then use it, else use $b.
I can do this like
<xsl:value-of select = "if(string($a)) then $a else $b"/>
Can I do something like
<xsl:value-of select = "($a,$b)[1]"/>
Not sure , when this will work and when it wont. Or will it work at all..
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