tzdb is a developer focused R package with two purposes:
It ships an up-to-date copy of the IANA time zone database files.
It provides low-level access to the C++ library, date.
To use the C++ API supplied by tzdb:
Add tzdb to both Imports and LinkingTo.
Call tzdb::tzdb_initialize()
from your .onLoad()
.
Access the date API through #include <tzdb/*.h>
where *
is
replaced with the date header you want to use.
Note that while tzdb/tz.h
declares many functions and types, most of
their implementations are not present in the header file. This means
that the functions in tzdb/tz.h
are not safe to call from your R
package. Instead, the most critical helpers have been exposed in a safe
way in tzdb/tzdb.h
. Use these instead.
You can install the released version of tzdb from CRAN with:
install.packages("tzdb")
And the development version from GitHub with:
# install.packages("pak")
pak::pak("r-lib/tzdb")
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