All, ?data.table says that `.SD` is read-only. However, I could use `setkey` on it. Is this officially supported, or is it dangerous to use on `.SD`, e.g. since in some corner cases some unexpected behavior could occur.
Thanks, M _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
