On Thu, Jul 30, 2015 at 3:23 PM, Chris Barker <chris.barker at noaa.gov> wrote: > Whereas .is_first would mean nothing to me at a glance, so I'd go read the > docs, and hopefully get a nice explanation ;-) Did you read <https://github.com/abalkin/ltdf/blob/master/README.rst#questions-and-answers>?