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On Tue, Mar 5, 2019 at 12:49 PM jan Vitek <vitekj at icloud.com> wrote: > Everything is possible. One can compile C++ into JavaScript. > > But why? > > I would like to support Java style syntax for class definitions. (Then it could transcompile into either S3 or S4). And possibly change some other things while I'm at it. Ma...

On Thu, Aug 9, 2018 at 4:26 PM jan Vitek <vitekj at icloud.com> wrote: > > > I'm now confident that I > > can avoid using "type" by itself, and instead always use it in a > > compound phrase (like type system) to avoid confusion. That leaves the > > `.type` argument to many vctrs functions. I'm cons...

It may be possible to create an R-like programming language that transcompiles into R code (or otherwise constructs R objects and calls R functions). I'm not sure whether it would pass R check or not, I will probably try... But the bigger question is: Should CRAN accept packages written in such a way? I could email Kurt Hornik or Uwe Ligges, and ask them. However, I thought that I would ask

> > As Gabe mentioned (and you've explained about) the term "type" > > is really confusing here. As you know, the R internals are all > > about SEXPs, TYPEOF(), etc, and that's what the R level > > typeof(.) also returns. As you want to use something slightly > > different, it should be different naming, ideally something not > > existing yet

Hello R experts, I plan to develop a tool for dynamic analysis of R programs. I would like to trace function calls at runtime, capturing argument and return values. Following a suggestion made some time ago on this list, my high-level implementation strategy is to rewrite the AST, augmenting call expressions with pre-call and post-call shims to capture the arguments and return value,

> I'm now confident that I > can avoid using "type" by itself, and instead always use it in a > compound phrase (like type system) to avoid confusion. That leaves the > `.type` argument to many vctrs functions. I'm considering change it to > .prototype, because what you actually give it is a zero-length vector > of the class you want, i.e. a prototype of the

Hi Evan, You may find some parts of what we are doing with genthat useful. Genthat is a tool for creating unit tests by recording argument and return values of calls. This is done by instrumentation of the source code. The git repo with the code is here https://github.com/PRL-PRG/genthat We don?t really deal with NSE though. It could be something worth thinking about for us. The contact for