R devel - Nov 2009 - Active bindings in attached environments

Hi,

I was wondering if this is expected behavior for active bindings in 
attached environments, or if this is a bug:

 > e <- new.env()
 > makeActiveBinding('x',function() 'foo',e)
 > ls(e)
[1] "x"
 > attach(e)
 > search()
[1] ".GlobalEnv"        "e"                
"package:graphics"
[4] "package:grDevices" "package:datasets" 
"package:utils"
[7] "package:methods"   "Autoloads"        
"package:base"
 > x
function() 'foo' # Should this print 'foo' ?

This works as I would expect:

 > with(e,x)
[1] "foo"

but this doesn't:

 > f <- function() x
 > f()
function() 'foo'

However, changing the environment of f does:

 > environment(f) <- e
 > f()
[1] "foo"


Jeff

Hi,

Is this expected behavior for active bindings in attached
environments, or is this a bug:
> e <- new.env()
> makeActiveBinding('x',function() 'foo',e)
> ls(e)
[1] "x"
> attach(e)
> search()
[1] ".GlobalEnv"        "e"                
"package:graphics"
[4] "package:grDevices" "package:datasets" 
"package:utils"
[7] "package:methods"   "Autoloads"        
"package:base"
> x
function() 'foo'

Should this print 'foo' ? The following works as I would expect:
> with(e,x)
[1] "foo"

but this doesn't:
> f <- function() x
> f()
function() 'foo'

However, changing the environment of f does:
> environment(f) <- e
> f()
[1] "foo"


Jeff






-- 
http://biostat.mc.vanderbilt.edu/JeffreyHorner

Sorry, I forgot the below:
> sessionInfo()
R version 2.10.0 Patched (2009-11-05 r50313)
i686-pc-linux-gnu

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base

This also happens on R version 2.11.0 Under development (unstable)
(2009-11-05 r50313)

Jeff

-- 
http://biostat.mc.vanderbilt.edu/JeffreyHorner

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