Functions that write a teal_slices object to a file in the JSON format,
and also restore the object from disk.
Value
slices_store returns NULL, invisibly.
slices_restore returns a teal_slices object restored from the file.
Details
Date and date time objects are stored in the following formats:
Dateclass is converted to the"ISO8601"standard (YYYY-MM-DD).POSIX*tclasses are converted to character by usingformat.POSIX*t(usetz = TRUE, tz = "UTC")(YYYY-MM-DD HH:MM:SS UTC, whereUTCis theCoordinated Universal Timetimezone short-code).
This format is assumed during slices_restore. All POSIX*t objects in
selected or choices fields of teal_slice objects are always printed in
UTC timezone as well.