datatype xs:duration

[Andrew Welch]

Please remember to reply-to-all and keep everything on the list,

> Why does the spec not provide a method add-durations() ?
> What were the reasons not to have such a function?
>
> Same for my other question:
> Why does the spec not provide a method add-duration-to-dateTime() ?
> What were the reasons not to have such a method?

Have a look at:

http://www.w3.org/TR/xpath-functions/#duration-arithmetic

Note that the op: prefixed functions are example functions rather than
actual functions you can call... as the normal + - operators etc work
on those types.  So to add a duration to date, you use $date +
$duration, to subtract a duration you use $date - $duration and so on.

If that doesn't make sense, post back (reply-to-all) with some sample code.



-- 
Andrew Welch
http://andrewjwelch.com