Re: [xsl] how to get variable value outside scope

Subject: Re: [xsl] how to get variable value outside scope
From: Mukul Gandhi <mukul_gandhi@xxxxxxxxx>
Date: Sun, 27 Feb 2005 02:31:44 -0800 (PST)
Thank you David for your comments.. I have corrected
both the mistakes you have pointed.. The updated
article is posted again.


--- David Carlisle <davidc@xxxxxxxxx> wrote:
> Mukul,
> There are a few technical issues, eg
> > The form [1] binds a variable name to a
> simple(simplest!) RTF. This
> > form is similar to declaration : <xsl:variable
> name="varname"
> > select="'mukul'" /> . The form [2] binds a
> variable name to a tree
> > fragment 
> actually the form <xsl:variable
> name="x">foo</xsl:variable> also binds a
> result tree fragment, which is immportant it means
> you normally
> shouldn't do it as it's inefficient and has the
> wrong behaviour when
> coerced to boolean.
> But mainly I wanted to comment on the general
> premise that
> > So the variable construct in XSLT behaves quite
> differently than
> > traditional variables. 
> This is like describing chinese by saying that it
> doesn't use the
> traditional english alphabet. The behaviour may be
> different from your
> expectation but "tradition" depends on who you are,
> and how long you've
> been there.
> The use of variables to denote values rather than
> memory locations has a
> long tradition that is much older than digital
> computers, and even in
> the context of digital computer languages goes back
> at least as far as
> lisp in the early 1960's. Given that, it reads
> rather strangely to see
> such newfangled languages as Java, and even C,
> described as
> "traditional". When I was first shown computer
> programmining (Fortran,
> at school in the mid 70's) the use of "variables" in
> that language and
> the fact that X=X+1 actually meant something and
> wasn't just a false
> equation, was described by all the beginner guides
> as a strange use of
> "variable" but a necessary low level feature in
> order to control a
> machine which wasn't capable of the normal
> mathematical reasoning. How
> times change....
> David

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