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Re: Usage of Asterisk in XPath expressions

Subject: Re: Usage of Asterisk in XPath expressions
From: "Liam R. E. Quin liam@xxxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 22 Mar 2019 20:12:04 -0000
Re:  Usage of Asterisk in XPath expressions
On Fri, 2019-03-22 at 13:33 +0000, Martin Honnen martin.honnen@xxxxxx
wrote:
> 
[...]
> However, the other main reason that doesn't raise an error is that
> ancestor-or-self::foo evaluates to the empty sequence in the context
> of that document and that way the multiplication also evaluates to
> the empty sequence.

Yup, You're a star! :D

As Mike Kay points out separately, itbs a problem when a language gets
so terse that almost any string of puctuation has a meaning.

With regular expressions i tend to write [(] and [)] because i can
never remember in which sytaxes \(...\) is special, same with [{]
braces [}]. There can be an efficiency overhead for doing this, but
therebs a bigger efficiency overhead in time lost from a confused
developer :)

Similarly, avoid using XPath axis names as namespace prefixes :-) :-)

Liam


-- 
Liam Quin, https://www.delightfulcomputing.com/
Available for XML/Document/Information Architecture/XSLT/
XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
Web slave for vintage clipart http://www.fromoldbooks.org/

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