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Milliseconds since Unix Epoch
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declare function local:milliseconds-since-epoch($dateTime as xs:dateTime) as xs:integer | |
{ | |
let $epoch := xs:dateTime("1970-01-01T00:00:00Z") | |
let $duration := xs:duration($dateTime - $epoch) | |
let $days := fn:days-from-duration($duration) * 8.64e+7 | |
let $hours := fn:hours-from-duration($duration) * 3.6e+6 | |
let $minutes := fn:minutes-from-duration($duration) * 60000 | |
let $seconds := fn:seconds-from-duration($duration) * 1000 | |
return xs:integer($days + $hours + $minutes + $seconds) | |
}; | |
local:milliseconds-since-epoch(fn:current-dateTime()) |
Sure! Notice, too, @ndw's use of xs:unsignedLong
which might help with very large numbers like 1472502093491
.
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Very nice! I first saw this in Norm Walsh's OAuth library, at https://github.com/ndw/XQuery-OAuth/blob/master/oauth.xqy#L40, and applied it in my adaptation at https://gist.github.com/joewiz/5929809#file-oauth-xq-L92.