The checkpoint() function stores a marker in the snapshot folder every time the function gets called. This marker contains the system date, thus indicating the the last time the snapshot was accessed.
getAccessDate(checkpointLocation = "~/")File path where the checkpoint library is stored. Default is "~/", i.e. the user's home directory. A use case for changing this is to create a checkpoint library on a portable drive (e.g. USB drive).
Named character with last access date
Other checkpoint functions:
checkpointArchives(),
checkpointRemove(),
checkpoint(),
getValidSnapshots(),
mranUrl(),
setSnapshot(),
unCheckpoint()