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Re^3: Determine if a given DateTime is a member of a DateTime::Set

by fglock (Vicar)
on May 16, 2013 at 08:26 UTC ( #1033787=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Determine if a given DateTime is a member of a DateTime::Set
in thread Determine if a given DateTime is a member of a DateTime::Set

DateTime::Set is fine to use, but calendar math has these mysterious details, and recurrence specifications are particularly hard.

The specialised "DateTime::Event" subclasses can make life easier. DateTime::Event::Sunrise and DateTime::Event::Cron are other nice examples.

About the endpoint that makes it work: when both endpoints of the set are known, it triggers an optimisation that pre-calculates the whole set. The internal representation then changes to a list. This "fixes" the problem, because no further recurrence math is involved.


Comment on Re^3: Determine if a given DateTime is a member of a DateTime::Set
Re^4: Determine if a given DateTime is a member of a DateTime::Set
by vagabonding electron (Hermit) on May 16, 2013 at 17:05 UTC

    Thank you for your time and of course for the modules (I should mention this earlier).

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