RE: Variables have no value

Yes - That was the problem - the debugger did not show a value, so I assumed
the error was caused by that.  And we know what happens when one assumes...

A variable that performed a calculation based on the values of the other
variables was failing.  Rearranging my code to print out the variables pointed
me to a missing dollar sign deep in the expression.

Thanks!

-----Original Message-----
From: Michael Kay [mailto:mike@xxxxxxxxxxxx]
Sent: Thursday, February 15, 2007 2:22 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: RE:  Variables have no value

What do you mean by saying that a variable has no value? How did you examine
the variable?

Variables in Saxon are often evaluated lazily (on first reference). If
you're using a debugger then it may be visible that a variable hasn't (yet)
been evaluated. But if you reference it from your code, it should always
have a value.

Michael Kay
http://www.saxonica.com/


> -----Original Message-----
> From: Angela Williams [mailto:Angela.Williams@xxxxxxxxxxxxxxxxxx]
> Sent: 15 February 2007 19:14
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Variables have no value
>
> Good afternoon -
> I'm using XSLT 2.0, Saxon8b, XEP4.4...
>
> Some of my variables are initializing and some are not. I've
> reordered them, overlaid non-working ones with working ones,
> added new ones, renamed them and revalued them and the same
> ones still won't initialize. I've googled and searched
> through the 6 or 7 books on my desk and can't find a reason
> why. What am I missing?
>
> <xsl:template match="something">
>     <xsl:variable name="A11" select="number(10)" />    <!--
> NO VALUE -->
>     <xsl:variable name="A21" select="number(4.5)"/>    <!--
> NO VALUE -->
>     <xsl:variable name="A12" select="number(313.6)" /> <!-- OK -->
>     <xsl:variable name="A22" select="number(208.1)"/>  <!-- OK -->
>     <xsl:variable name="A32" select="number(6)"/>      <!-- OK -->
>     <xsl:variable name="A42" select="number(6)"/>      <!--
> NO VALUE -->
>     <xsl:variable name="A52" select="number(6)"/>      <!-- OK -->
>     <xsl:variable name="A62" select="number(6)"/>      <!--
> NO VALUE -->
>
>     <xsl:variable name="B32" select="number(43)"/>   <!-- OK -->
>     <xsl:variable name="B42" select="number(22)"/>   <!-- OK -->
>     <xsl:variable name="B52" select="number(3)"/>    <!-- OK -->
>     <xsl:variable name="B62" select="number(3)"/>    <!-- OK -->
>
>     <!-- Do something with the variables here. Fails with
> Attribute 'x' cannot have a value of NaN error.--> </xsl:template>
>
>
> Thanks!
> Angela Williams
> Channel Developer
> The 401k Company
> Austin, Texas, USA
> 512-344-1547
>