xs.dateTime.subtract( $value as xs.dateTime|xs.yearMonthDuration|xs.dayTimeDuration ) as xs.dayTimeDuration|xs.dateTime
Returns the difference between two xs.dateTimes as an xs.dayTimeDuration. Returns the beginning of a time period by subtracting an xs.yearMonthDuration from thexs.dateTime that ends the period. Returns the beginning of a time period by subtracting an xs.dayTimeDuration from the xs.dateTimethat ends the period.
|$value||A date time or year month duration or day time duration.|
var v1 = xs.dateTime(xs.date('2013-08-15'), xs.time('12:30:45-05:00')); var v2 = xs.yearMonthDuration("P3Y3M"); v1.subtract(v2);