Hi Dirk, > I had done some experiments with 'expanded finalizers' that use more logging > (which I find quite convenient via `spdl` -- same nice spdlog interface now > from R and C++) so you could add some display of the pointer address, check > on nullness etc. > > I have done a bit more work using XPtr in the context of the tiledb (and the > related, possibly upcoming tiledbsoma package not yet on CRAN) where I use an > enum (which requires C++17 in the use I have there) to 'type tag' each > external pointer and on each use check I have the correct type. I am not > thinking to a simple unordered_map from enum to string to also make more > informed errors (showing the type as string rather than enum int value) as > well as maybe an enhanced show or print at the R level. I have long been > meaning to farm that out into a new (simple) add-on package (see issue #1212) > and should get on with that. (The 'still somewhat raw' XPtr extension in > tiledb is eg here: > https://github.com/TileDB-Inc/TileDB-R/blob/1e7bd2fa4e54f3e152c4fec3a65343df49d3f525/src/libtiledb.h#L80-L160 > and the check_xptr_tag is then used throughout the files in src/.
Thanks! That does sound interesting. I think for my current use-case the existing functionality is sufficient. But i will have a look at these ideas. Ralf _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
