helper func to update 1 metadata attribute (e.g. "ejam_package_version") in all pkg datasets updates EJAM/data/*.rda (BUT NOT ARROW & NOT TXT FILES)
Source:R/utils_metadata_add.R
      metadata_update_attr.Rdhelper func to update 1 metadata attribute (e.g. "ejam_package_version") in all pkg datasets updates EJAM/data/*.rda (BUT NOT ARROW & NOT TXT FILES)
See also
metadata_check_print() metadata_check() metadata_add() metadata_update_attr() metadata_add_and_use_this() dataset_documenter()