File will be named var_name.RData with an optional suffix
save_in_data_dir(var_name, suffix = "")
character or symbol, e.g. "myvar" or myvar,
either of which would find myvar in the parent environment, and save
it as myvar.RData in package_root/data.
invisibly returns the data
Questions? Problems? Suggestions? Tweet to @rdrrHQian@mutexlabs.com.
Please suggest features or report bugs with the GitHub issue tracker.
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