Watch a directory for changes (additions, deletions & modifications).Source:
This is used to power the
auto_test_package() functions which are used to rerun tests
whenever source code changes.
character vector of paths to watch. Omit trailing backslash.
function called everytime a change occurs. It should have three parameters: added, deleted, modified, and should return TRUE to keep watching, or FALSE to stop.
file pattern passed to
hashes are more accurate at detecting changes, but are slower for large files. When FALSE, uses modification time stamps