- From: Liam R. E. Quin <liam@fromoldbooks.org>
- Date: Tue, 07 Feb 2023 17:28:11 -0500
- To: public-xslt-40@w3.org
On Tue, 2023-02-07 at 21:36 +0000, Michael Kay wrote: > > The question we're addressing, if I understand it correctly, is what > to do when E is a sequence, and when it contains some items for which > e?X is defined (i.e. maps and arrays) and other items for which e?X > is not defined and throws an error. if the items in E are not maps, then it sounds like a mistkae in the query to try and look things up in them, and i don't think i want that silently ignored. If i need to i can write a function using typeswitch or whatever. Same with "boy"/noise/dirt I get an error with let $items := (<boy><noise>bang</noise></boy>, <boy/>, <boy><dirt><noise>ew</noise></dirt></boy>, "child") return $items//noise However, if the items are all elements it's of course fine. So if E were to be a sequence of maps, $E??noise should be fine as long as every item in E is a map. ()??noise would return the empty sequence, just as ()//noise does. > What's the objection to writing `E[. instance of map(*)]?X ` - is it > just that's it's wordy? That, and that most people won't know to do it. However, i am still nervous that ?? means something closely related but different in JavaScript. 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
Received on Tuesday, 7 February 2023 22:29:46 UTC