On Thursday, September 19, 2019 at 7:39:47 AM UTC-7, Thomas Keffer wrote: > I'm in favor of eliminating month arithmetic. It doesn't add anything. > > Wow there are a lot of edge cases. Graham's experiment makes my head spin.
Perl does it this way - https://metacpan.org/pod/DateTime#$dt-%3Esubtract_datetime(-$datetime-) I particularly liked the "*Note that this duration is not an absolute measure of the amount of time between the two datetimes, because the length of a month varies, as well as due to the presence of leap seconds.*" There doesn't seem to be a great answer on this one that doesn't get really complicated. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/7086c963-6b87-48c1-8ad8-04be4ecb8e97%40googlegroups.com.
