Hi Frederick, I described what I meant in the post I sent to R-help (https://stat.ethz.ch/pipermail/r-help/2016-September/442174.html), but in brief, by "zero overhead" I mean that the only thing needed for library code to be accessible to client code is for it to be located in designed directory. No additional meta-files, packaging/compiling, etc. are required.
Best, G. On Sun, Oct 2, 2016 at 7:09 PM, <frede...@ofb.net> wrote: > Hi Kynn, > > Do you mind defining the term "zero-overhead model of code reuse"? > > I think I understand what you're getting at, but not sure. > > Thank you, > > Frederick > > On Sun, Oct 02, 2016 at 01:29:52PM -0400, Kynn Jones wrote: >> I'm looking for a way to approximate the "zero-overhead" model of code >> reuse available in languages like Python, Perl, etc. >> >> I've described this idea in more detail, and the motivation for this >> question in an earlier post to R-help >> (https://stat.ethz.ch/pipermail/r-help/2016-September/442174.html). >> >> (One of the responses I got advised that I post my question here instead.) >> >> The best I have so far is to configure my PROJ_R_LIB environment >> variable to point to the directory with my shared code, and put a >> function like the following in my .Rprofile file: >> >> import <- function(name){ >> ## usage: >> ## import("foo") >> ## foo$bar() >> path <- file.path(Sys.getenv("PROJ_R_LIB"),paste0(name,".R")) >> if(!file.exists(path)) stop('file "',path,'" does not exist') >> mod <- new.env() >> source(path,local=mod) >> list2env(setNames(list(mod),list(name)),envir=parent.frame()) >> invisible() >> } >> >> (NB: the idea above is an elaboration of the one I showed in my first post.) >> >> But this is very much of an R noob's solution. I figure there may >> already be more solid ways to achieve "zero-overhead" code reuse. >> >> I would appreciate any suggestions/critiques/pointers/comments. >> >> TIA! >> >> kj >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
