[Rcpp-devel] devtools::load_all() working differently for Rcpp >= 0.11.0

[Finlay Scott]

Hi Kevin,
Thanks for the reply. I tried using the development version of devtools but
got the same result. I have access to a Windows machine here so will repeat
my test on that.

I also think that it is more likely to do with devtools than Rcpp so I if
don't make any progress I will post there (and report back here).

Thanks

Finlay


On Thu, Jul 3, 2014 at 4:16 PM, Kevin Ushey <kevinushey at gmail.com> wrote:

> Hi Finlay,
>
> I'm unable to reproduce this on Mac OS X, although I am running the
> development version of devtools. Can you try that?
>
> That said, if you still have this problem after updating I would
> recommend posting it at https://github.com/hadley/devtools/issues as
> even if there is a problem, I don't think it's an Rcpp one.
>
> Cheers,
> Kevin
>
> > sessionInfo()
> R Under development (unstable) (2014-07-01 r66058)
> Platform: x86_64-apple-darwin13.2.0 (64-bit)
>
> locale:
> [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] NewPackage_1.0       Rcpp_0.11.2          knitr_1.6
> [4] devtools_1.5.0.99    BiocInstaller_1.15.3
>
> On Thu, Jul 3, 2014 at 2:27 AM, Finlay Scott <drfinlayscott at gmail.com>
> wrote:
> > Hi,
> >
> > First of all, thanks for all the hard work that has been put into Rcpp.
> It
> > really is a great package.
> >
> > I'm redeveloping a package I was working on last year that uses Rcpp,
> > particularly attributes. I used the devtools package to help with the
> > development process. My general development approach was to add or
> change a
> > function with attributes in the C++ source code, and then reload the
> package
> > using the devtools function load_all(). This would recompile the source
> > code, and update the RcppExports.R and .cpp files as necessary. The new
> > exported function would then be immediately available to the current R
> > session.
> >
> > I have now updated all my R packages and am using Rcpp 0.11.2.
> > Unfortunately, the behaviour of load_all() is now different. For
> example, if
> > I start a new package from scratch:
> >
> > library(Rcpp)
> > Rcpp.package.skeleton("NewPackage", attributes = TRUE)
> >
> > # Then load devtools and use load_all()
> >
> > library(devtools)
> > load_all("NewPackage")
> >
> > # The demo function works just fine
> >
> > rcpp_hello_world()
> >
> > # I make a change to the source code of the rcpp_hello_world() function
> > # For example, changing one of the values in the returned list
> > # I rerun load_all()
> >
> > load_all("NewPackage")
> >
> > # The package recompiles, and I can see that the resulting *.o and *.so
> have
> > been updated.
> > # However, calling rcpp_hello_world() still returns the old output, i.e.
> the
> > function called from R does not seem to have been updated.
> > # Similarly, if I add a new simple function with attributes to
> > rcpp_hello_world.cpp
> > # For example:
> >
> > // [[Rcpp::export]]
> > int do_nothing(){
> >     return 0;
> > }
> >
> > # If I call load_all() again, the package compiles and the RcppExports.R
> and
> > .cpp files have been updated to include this new function (i.e. it looks
> > like compileAttributes() has been called by load_all()).
> > # However, if I try to call do_nothing() from R I get:
> >
> > Error in .Call("NewPackage_do_nothing", PACKAGE = "NewPackage") :
> >   "NewPackage_do_nothing" not available for .Call() for package
> "NewPackage"
> >
> > So it looks like load_all() is updating and recompiling the package
> > accordingly, but it is not being 'reloaded' in the current R session.
> >
> > I ran a test using Rcpp 0.10.6 and the latest devtools (1.5) and the
> above
> > tests passed (i.e. after running load_all() the new function was
> available
> > to the current R session), so the problem seems to be with Rcpp > 0.11.0
> >
> > Does anyone else have experience of this, and a workaround?
> >
> > Apologies if this is more of a devtools question than an Rcpp one. I will
> > repost at the devtools mailing list if necessary.
> >
> > I am using Ubuntu 14.04 , R 3.1.0; x86_64, devtools 1.5
> >
> > Thanks
> >
> > Finlay
> >
> >
> > _______________________________________________
> > Rcpp-devel mailing list
> > Rcpp-devel at lists.r-forge.r-project.org
> > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
>
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