PERF: add exact kw to to_datetime to enable faster regex format parsing#8904

Merged

jreback merged 2 commits intopandas-dev:masterfrom

Dec 5, 2014

Commits on Dec 5, 2014

PERF: add exact kw to to_datetime to enable faster regex format parsing for datetimes (GH8904)
jreback
committed
BUG: fix GH8989 to parse nanoseconds with %f format
jreback
committed