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...an excellent venue for deep technical discussions about R implementations, tools, optimizations and R extension, and will be very interesting for anyone interested in what?s under the hood of R. Regards, Stepan Sindelar, Lukas Stadler (Oracle Labs), Jan Vitek (Northeastern), Alexander Bertram (BeDataDriven) [1] http://riotworkshop.github.io/

There's a StackOverflow question https://stackoverflow.com/q/22024082/2554330 that references this text from ?missing: "Currently missing can only be used in the immediate body of the function that defines the argument, not in the body of a nested function or a local call. This may change in the future." Someone pointed out (in https://stackoverflow.com/a/58169498/2554330)

...(missing(z)) cat("f2: z is missing\n") f1(x, y) } f2() prints f2: z is missing The intersection of default values, and the representation of missing without a default as a symbol yields some unexpected and complex behaviors. Here are a few more fun examples: https://github.com/bedatadriven/renjin/blob/master/tests/src/test/R/test.missing.R Best, Alex On Tue, Oct 1, 2019, 10:27 Duncan Murdoch <murdoch.duncan at gmail.com> wrote: > > There's a StackOverflow question > https://stackoverflow.com/q/22024082/2554330 that references this text > from ?missing: >...

...ep technical discussions about R > implementations, tools, optimizations and R extension, and will be very > interesting for anyone interested in what?s under the hood of R. > > Regards, > Stepan Sindelar, Lukas Stadler (Oracle Labs), Jan Vitek (Northeastern), > Alexander Bertram (BeDataDriven) > > [1] http://riotworkshop.github.io/ > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel

...about R >> implementations, tools, optimizations and R extension, and will be very >> interesting for anyone interested in what?s under the hood of R. >> >> Regards, >> Stepan Sindelar, Lukas Stadler (Oracle Labs), Jan Vitek (Northeastern), >> Alexander Bertram (BeDataDriven) >> >> [1] https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Friotworkshop.github.io%2F&amp;data=02%7C01%7Cj.vitek%40northeastern.edu%7C649169c229e1438e351808d7bb05473a%7Ca8eec281aaa34daeac9b9a398b9215e7%7C0%7C0%7C637183503671619822&amp;sdata=pATfh3Mmv%2FT1UvElIcz...

...brary (error: C symbol name "R_isMethodsDispatchOn" not in DLL for package "base"), but I was wondering whether if anyone else is working on this, or if this is scheduled to be phased out altogether. Thanks for the info, Alex Alex Bertram Partner be*datadriven* Email: alex@bedatadriven.com Tel. +31(0)647205388 Skype: akbertram [[alternative HTML version deleted]]

Hello, I am writing an R/Go interoperability tool[1] that work similarly to Rcpp; the tool takes packages written in Go and performs the necessary Go type analysis to wrap the Go code with C and R shims that allow the Go code to then be called from R. The system is largely complete (with the exception of having a clean approach to handling generalised attributes in the easy case[2] - the less