What other ways do you do defensive programming in XSLT?
Didn't I already mention "catch-all" templates?
In fact, I don't believe one can achieve the result of using a catch-all
template with xsl:assert.
xsl:assert can be present only at a location when something is matched ...
thus if a given match-expression is never matched, there is no way to add
an xsl:assert for this "no match"
Thanks,
Dimitre
On Fri, May 6, 2022 at 9:05 AM Dimitre Novatchev
<dnovatchev(_at_)gmail(_dot_)com>
wrote:
What other ways do you do defensive programming in XSLT?
Didn't I already mention "catch-all" templates?
Thanks,
Dimitre
On Fri, May 6, 2022 at 7:16 AM Roger L Costello costello(_at_)mitre(_dot_)org
<
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hi Folks,
I just love the xsl:assert statement!
I am going wild with it.
I am peppering asserts through my XSLT program. Already I have caught a
bunch of errors that would otherwise have been missed.
It dawned on me that there are other mechanisms in XSLT that perform
"implicit asserts":
<xsl:param name="item" as="element(author)"/>
is equivalent to:
<xsl:param name="item"/>
<xsl:assert test="name($item) eq 'author'"/>
And this:
<xsl:variable name="item" select="..." as="element(author)+" />
is equivalent to:
<xsl:variable name="item" select="..." />
<xsl:assert test="count($item) ge 1" />
What other mechanisms are there in XSLT that effectively perform implicit
asserts?
What other ways do you do defensive programming in XSLT?
/Roger
--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they
write all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.
--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they write
all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.
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