14:48:49 <RRSAgent> RRSAgent has joined #forms
14:48:49 <RRSAgent> logging to http://www.w3.org/2015/04/29-forms-irc
14:48:51 <trackbot> RRSAgent, make logs public
14:48:51 <Zakim> Zakim has joined #forms
14:48:53 <trackbot> Zakim, this will be IA_XForms
14:48:53 <Zakim> I do not see a conference matching that name scheduled within the next hour, trackbot
14:48:54 <trackbot> Meeting: Forms Working Group Teleconference
14:48:54 <trackbot> Date: 29 April 2015
14:49:11 <Steven> zakim, room for 5 at 1500z?
14:49:13 <Zakim> ok, Steven; conference Team_(forms)15:00Z scheduled with code 26631 (CONF1) at 15:00z for 60 minutes until 1600Z; however, please note that capacity is now overbooked
14:54:40 <alain> alain has joined #forms
14:55:55 <Steven> Steven has changed the topic to: Code CONF1; Agenda: https://lists.w3.org/Archives/Public/public-xformsusers/2015Apr/0009.html
14:56:13 <Steven> Chair: Steven
14:56:17 <Steven> Regrets: Nick
14:56:22 <Steven> Agenda: https://lists.w3.org/Archives/Public/public-xformsusers/2015Apr/0009
14:59:26 <pfennell> pfennell has joined #forms
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15:00:56 <Zakim> Team_(forms)15:00Z has now started
15:01:02 <Zakim> +??P14
15:01:10 <Steven> zakim, I am ?
15:01:10 <Zakim> +Steven; got it
15:01:43 <Zakim> +ebruchez
15:02:03 <pfennell> Hello, the passcode for the conference call is nolonger valid.
15:02:09 <Steven> CONF1
15:02:20 <Steven> (See IRC topic)
15:02:29 <Zakim> +[IPcaller]
15:02:31 <alain> Zakim, I am [IPcaller]
15:02:32 <Zakim> ok, alain, I now associate you with [IPcaller]
15:02:58 <Zakim> +pfennell
15:03:16 <Steven> Topic: No call next week
15:03:16 <Steven> [W3C AC Meeting, Paris]
15:03:34 <Steven> Steven: I propose we skip next week's call.
15:03:50 <Steven> Topic: XPath Expression Module review
15:03:50 <Steven> https://lists.w3.org/Archives/Public/public-xformsusers/2015Apr/0008.html
15:08:07 <ebruchez> https://www.w3.org/MarkUp/Forms/wiki/XPath_Expressions_Module#The_avg.28.29_Function
15:08:36 <Steven> Erik: It's like min/max, and we just hadn't noticed.
15:09:21 <Steven> Alain: With all integers, it should return decimal
15:09:32 <Steven> Erik: Makes sense.
15:09:42 <Steven> ... XPath 1.1 always takes doubles
15:09:56 <Steven> ... so integers to decimals make sense
15:10:09 <Steven> Alain: The division operator does that
15:10:24 <ebruchez> http://www.w3.org/TR/xpath-functions/#func-numeric-divide
15:10:57 <Steven> "Summary: Backs up the "div" operator and returns the arithmetic quotient of its operands: ($arg1 div $arg2).
15:10:57 <Steven> As a special case, if the types of both $arg1 and $arg2 are xs:integer, then the return type is xs:decimal."
15:11:17 <Steven> Erik: We have the same thing with min and max
15:11:26 <Steven> ... avg is also designed in XPath 2
15:12:08 <ebruchez> http://www.w3.org/TR/xpath-functions/#func-avg
15:12:13 <Steven> ... in xpath avg is defined using sum and division
15:12:46 <Steven> "returns the average of the values as sum($arg) div count($arg); "
15:13:44 <Steven> Erik: In Saxon, it is the case that two integers produce a decimal
15:13:51 <ebruchez> `avg((xs:integer(1), xs:integer(2))) instance of xs:decimal` returns `true()`
15:14:47 <Steven> Erik: avg(2, 2) returns decimal
15:16:09 <Steven> ... either way, we should do the same as with min and max, where we do something in compatibility mode to support XForms 1.1, and otherwise use the XPath 2.0 functions
15:16:14 <Steven> Steven: Sounds good.
15:16:40 <Steven> ACTION: Erik to treat avg the same as min/max in compatibility mode
15:16:40 <trackbot> Error finding 'Erik'. You can review and register nicknames at <https://www.w3.org/2005/06/tracker/xforms/users>.
15:17:20 <Steven> Steven: "- index(), which says it returns an xs:integer, but then says it can return NaN
15:17:20 <Steven> "
15:17:48 <Steven> Erik: but NaN is not an integer
15:18:12 <Steven> https://www.w3.org/MarkUp/Forms/wiki/XPath_Expressions_Module#The_index.28.29_Function
15:19:06 <Steven> Erik: THree possible approaches: return a double, and NaN when not found; integer, with an empty sequence when not found
15:19:15 <Steven> ... or otherwise throw an error
15:19:20 <Steven> s/TH/Th/
15:19:36 <ebruchez> https://www.w3.org/MarkUp/Forms/wiki/XPath_Expressions_Module#The_case.28.29_Function
15:20:11 <Steven> Erik: Case function returns an empty seq; so for consistency index() should do the same
15:20:31 <Steven> ... then we have a backwards compitibility issue
15:21:02 <Steven> ... maybe do the same in compatibility mode as with min/max
15:21:34 <Steven> ... so for XPath 2 support we do the right thing, return an optional integer
15:21:53 <Steven> ... not really natural to return a double for something that is an integer
15:22:02 <Steven> Steven: I'm happy with that
15:22:17 <Steven> ACTION: Erik to make change to index() to return an optional integer
15:22:17 <trackbot> Error finding 'Erik'. You can review and register nicknames at <https://www.w3.org/2005/06/tracker/xforms/users>.
15:22:37 <Steven> Steven: "- random(), which should probably just return xs:double
15:22:37 <Steven> "
15:23:10 <ebruchez> https://www.w3.org/MarkUp/Forms/wiki/XPath_Expressions_Module#The_random.28.29_Function
15:24:04 <Steven> Erik: It says it returns a numeric, but this should be double.
15:24:09 <Steven> Steven: Sounds right.
15:25:19 <Steven> Erik: We don't define 'numeric'. It is used at several points.
15:25:35 <Steven> ... it is from XPath
15:26:13 <Steven> ... we should check that 'numeric' us used sensibly in our spec
15:26:17 <Steven> s/us/is/
15:26:46 <Steven> ACTION: Erik to check that 'numeric' type is used sensibly in our spec
15:26:46 <trackbot> Error finding 'Erik'. You can review and register nicknames at <https://www.w3.org/2005/06/tracker/xforms/users>.
15:27:15 <Steven> Topic: JSON-to-XML and CSV-to-XML mappings in XForms 2.0
15:27:15 <Steven> [No link yet]
15:27:29 <Steven> Steven: Anything to report?
15:27:39 <Steven> Erik: Not from my side yet
15:27:47 <Steven> Steven: Is a response being asked for?
15:27:57 <Steven> Erik: Don't think so.
15:28:22 <Steven> Steven: I'll check for the next call if there is anything we urgently need to do.
15:28:49 <Steven> Topic: AOB
15:28:57 <Steven> Steven: Any?
15:29:00 <Steven> [None]
15:29:10 <Steven> Steven: OK, next call in two weeks.
15:29:10 <Zakim> -pfennell
15:29:13 <Zakim> -[IPcaller]
15:29:13 <Steven> [ADJOURN]
15:29:14 <Zakim> -ebruchez
15:29:16 <Zakim> -Steven
15:29:19 <Zakim> Team_(forms)15:00Z has ended
15:29:19 <Zakim> Attendees were Steven, ebruchez, [IPcaller], pfennell
15:29:27 <Steven> Present+Alain
15:29:38 <Steven> rrsagent, make minutes
15:29:38 <RRSAgent> I have made the request to generate http://www.w3.org/2015/04/29-forms-minutes.html Steven
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