Extracted from Pike v7.8 release 866 at 2016-11-06.
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Calendar
Calendar.TimeRange

Methods
 _equal()
 `&()
 `*()
 `+()
 `-()
 `/()
 `<()
 `==()
 `>()
 `^()
 `|()
 add()
 beginning()
 calendar()
 contains()
 create()
 distance()
 end()
 equals()
 how_many()
 is_next_to()
 is_previous_to()
 language()
 next()
 offset_to()
 overlaps()
 place()
 preceeds()
 prev()
 range()
 ruleset()
 set_language()
 set_ruleset()
 set_size()
 set_timezone()
 space()
 split()
 strictly_preceeds()
 strictly_succeeds()
 subtract()
 succeeds()
 timezone()
previousCalendar.TimeRange()->`>()
Calendar.TimeRange()->`|()next

Method Calendar.TimeRange()->`^()

Method `^

TimeRange `^(TimeRange with)

Description

Gives the exclusive-or on the called time period and another time period, ie the union without the cut. The result is zero if the two periods were the same. 

>- the past          the future -<
 |-------called-------|
      |-------other--------|
 <----|               |---->   - exclusive or