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Recently Chris Wallace has been writing about formatting numbers in XQuery; as you may remember, I did blog about an XQuery-based format-number function some time ago, providing a partial implementation.
Chris mentions my post in his Wikibooks entry, and he has been so nice to run some tests and identify a few bugs and limitations. As I've recently had to "enjoy" a red eye flight on my way back to Boston, I couldn't resist the temptation to fix some of those issues.
Attached is a better version; it includes also support for the typical functionality you would access through xsl:decimal-format. The XQuery includes the tests that Chris posted on the Wikibooks entry, plus a few more, whose results are:[cc lang="xquery"]
[/cc]This is far from being a complete solution; there are several patterns that are not supported at all; but it's getting better... As I commented here I do believe that format-number needs to become part of the XQuery language and natively supported by the engine, which is the direction where XQuery 1.1 is moving.
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