From murdoch.duncan at gmail.com  Sun Sep 21 21:57:00 2014
From: murdoch.duncan at gmail.com (Duncan Murdoch)
Date: Sun, 21 Sep 2014 15:57:00 -0400
Subject: [Rd] Bug in new behaviour for all.equal and environments?
In-Reply-To: <541F0D2A.6010809@sapo.pt>
References: <CAJXgQP0pTjOPsuEYLw+iLSi60cwGFT0cvFVSnNgwOVGTf8Eaag@mail.gmail.com>
	<541F0D2A.6010809@sapo.pt>
Message-ID: <541F2D8C.7090407@gmail.com>

On 21/09/2014, 1:38 PM, Rui Barradas wrote:
> Hello,
> 
> In R 3.1.1 on Windows 7 it's ok.
> 
>  > all.equal(baseenv(), baseenv())
> [1] TRUE
>  > sessionInfo()
> R version 3.1.1 (2014-07-10)
> Platform: x86_64-w64-mingw32/x64 (64-bit)

I'm not sure if that's really "ok", since it returns TRUE for any pair
of environments, e.g.

all.equal(baseenv(), emptyenv())

The current R-devel behaviour is temporary and certain to change.

Duncan Murdoch

> 
> locale:
> [1] LC_COLLATE=Portuguese_Portugal.1252 
> LC_CTYPE=Portuguese_Portugal.1252
> [3] LC_MONETARY=Portuguese_Portugal.1252 LC_NUMERIC=C 
> 
> [5] LC_TIME=Portuguese_Portugal.1252
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> 
> Rui Barradas
> 
> Em 21-09-2014 18:06, Kevin Ushey escreveu:
>> Hi R-devel,
>>
>> The following code:
>>
>>      all.equal(baseenv(), baseenv())
>>
>> gives the error when run in a clean R session with latest R-devel (r66650):
>>
>>      kevin:~$ R --vanilla --slave -e "all.equal(baseenv(), baseenv())"
>>      Error in all.equal.envRefClass(target[[i]], current[[i]],
>> check.attributes = check.attributes,  :
>>        attempt to apply non-function
>>      Calls: all.equal ... all.equal.list -> all.equal -> all.equal.envRefClass
>>      Execution halted
>>
>> Although I don't know if it's helpful -- it appears that packages that
>> include some S4 machinery will effect the outcome of this error, e.g.
>> if we load 'Biobase' first:
>>
>>      kevin:~$ R --vanilla --slave -e
>> "suppressPackageStartupMessages(library(Biobase));
>> all.equal(baseenv(), baseenv())"
>>      Error in target$getClass() : object '.refClassDef' not found
>>      Calls: all.equal ... all.equal.list -> all.equal ->
>> all.equal.envRefClass -> <Anonymous>
>>      Execution halted
>>
>> We were bumping into an error with this in Rcpp -- we used all.equal
>> (through RUnit) to confirm that baseenv(), and a function returning
>> the base environment, would return TRUE.
>>
>> For completeness:
>>
>>      kevin:~$ R --vanilla --slave -e "sessionInfo()"
>>      R Under development (unstable) (2014-09-20 r66650)
>>      Platform: x86_64-apple-darwin13.3.0 (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
>>
>> Thanks,
>> Kevin
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>



[Rd] Bug in new behaviour for all.equal and environments?
Duncan Murdoch