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Re: testing dates

2004-09-08 02:43:16
On Wed, 2004-09-08 at 10:29, David Carlisle wrote:
XSLT 1 only has numeric less than operation  so if you give it to
strings they are each converted to a number before comparing 2004-06-27
and 2004-09-05 both compare to NaN (Not-A-Number) I leave it to IEEE
lawyers to confirm what exactly the value of NaN < NaN should be
but I would guess that it's false, as you say.

Aha. Excellent, many thanks. This had eluded me. Easy fix:

<xsl:if test="translate($isodate,'-','') ... etc

In XSLT2 you could cast the strings to dates then do a date-aware
comparison.

<xsl:if test="discordian-date(foo/@date) earlier-than
julian-date(bar/@date)">

One day :-)

///Peter




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