Thank you David for your comments.. I have corrected
both the mistakes you have pointed.. The updated
article is posted again.
Regards,
Mukul
--- David Carlisle <davidc(_at_)nag(_dot_)co(_dot_)uk> 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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