Delete files from the download cache

qes_cache_clear() deletes cached files: all of them, those of some studies, or those older than a given age. It also forgets the data and metadata kept in memory for this session. It deletes files only in a directory that qesR created and marked as its cache (it holds a .qesR-cache file) and refuses any other directory.

Usage

qes_cache_clear(studies = NULL, older_than = NULL)

Arguments

studies

Optional character vector of study codes (see qes_studies()). NULL (default) clears every study.

older_than

Optional age: a number of days, or a difftime. Only files retrieved longer ago than this are deleted.

Value

The paths of the deleted files, invisibly.

See also

qes_cache_info(), which also describes where files are kept.

Other cache: qes_cache_info()

Examples

# these examples work on the session cache only, so that running them
# never deletes a disk cache you have opted in to
op <- options(qesR.cache = "session")

# delete files kept more than 30 days
qes_cache_clear(older_than = 30)

# delete everything in the cache
qes_cache_clear()

options(op)