On Tue, 2020-06-23 at 14:29 +0000, Roger L Costello
costello(_at_)mitre(_dot_)org
wrote:
I want a function that reduces the number of digits to the right of
the decimal point in $num according to the value specified in
$desired-number-of-digits-after-decimal-point
Make a variable, $pattern, "
<xsl:sequence select="
let $pattern := '(\.\d{' || $ndigits || '})\d+$'
return replace($input, $pattern, '$1')
" />
may or may not be clearer - using a variable $pattern simplifies
constructructing regular expressions containing braces.
This will work in XSLT 3and XQuery, but doesn't cope well with zero,
nor with input ending in .
So one could write,
<xsl:sequence select="
if ($ndigits le 0) then substring-before($input, '.')
else
let $pattern := '(\.\d{' || $ndigits || '})\d+$'
return replace($input, $pattern, '$1')
" />
This is more succinct than yours, but whether it's easier to follow
depends on one's comfort with regular expressions and knowing that
\d{3} will match exactly digits.
One of the topics in the talk i'll be giving tomorrow at Markup UK
relates to the rhetorical nature of the stylesheets we write.
Liam
--
Liam Quin, https://www.delightfulcomputing.com/
Available for XML/Document/Information Architecture/XSLT/
XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
Barefoot Web-slave, antique illustrations: http://www.fromoldbooks.org
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