- From: Tim Mills <tim@cbcl.co.uk>
- Date: Thu, 2 Jun 2016 12:59:45 +0100
- To: public-xsl-query@w3.org
On 02/06/2016 11:31, Michael Kay wrote:
>
> Given
>
> let $a := <a size="3"/>
>
> let $m := map{ $a/@size+1, $a }
>
> people expect $m(4) to return the <a> element. We don't want them to have to start thinking about the fact that @size+1 is actually an xs:double rather than an integer.
>
On that basis, a user might also expect
let $result := map {
xs:float(33554433): "no surprise"
}
return $result?33554433
to return "no surprise", but instead the user will end up surprised,
having been led astray by having seen this work for smaller integers.
The rule "use a key of matching type" is one the user would learn early
on. Learning "beware the precision of floating point numbers" might
take a little longer.
Cheers,
Tim
Received on Thursday, 2 June 2016 12:00:17 UTC