R devel - Oct 2004 - is.vector() gives error (PR#7288)

Full_Name: Jelle Goeman
Version: 2.0.0
OS: windows
Submission from: (NULL) (145.88.209.33)


I get a strange error:
> is.vector(1:10)
Error: recursive default argument reference

What's recursive about is.vector?

Kind regards,

Jelle Goeman

My R:

platform i386-pc-mingw32
arch     i386           
os       mingw32        
system   i386, mingw32  
status                  
major    2              
minor    0.0            
year     2004           
month    10             
day      04             
language R

j.j.goeman@lumc.nl wrote:
> Full_Name: Jelle Goeman
> Version: 2.0.0
> OS: windows
> Submission from: (NULL) (145.88.209.33)
> 
> 
> I get a strange error:
> 
> 
>>is.vector(1:10)
> 
> Error: recursive default argument reference

Works for me. Looks like your installation is broken, or do you have 
loaded some strange packages?

Uwe Ligges


> What's recursive about is.vector?
> 
> Kind regards,
> 
> Jelle Goeman
> 
> My R:
> 
> platform i386-pc-mingw32
> arch     i386           
> os       mingw32        
> system   i386, mingw32  
> status                  
> major    2              
> minor    0.0            
> year     2004           
> month    10             
> day      04             
> language R
> 
> ______________________________________________
> R-devel@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

j.j.goeman@lumc.nl writes:
> I get a strange error:
> 
> > is.vector(1:10)
> Error: recursive default argument reference
Hmm. I can't reproduce that on Linux...
 
> What's recursive about is.vector?
Nothing. You generally get that error if two arguments refer to
eachother, as in
> f <- function(x=y,y=x)x+y
> f(1)
[1] 2
> f(,1)
[1] 2
> f()
Error in f() : recursive default argument reference

but nothing of that sort is going on in is.vector. Unless it somehow
got redefined --- are you sure that you got the original is.vector
there? 
>  is.vector
function (x, mode = "any")
.Internal(is.vector(x, mode))
<environment: namespace:base>

The other possibility is that you're tickling a low-level, system
dependent bug in the evaluator. Can anyone reproduce this?

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907

Hi,

I only loaded survival and Biobase yesterday. But I cannot reproduce the
error myself today... I'll report again when I find out more.

Best,

Jelle

http://www.math.leidenuniv.nl/~jgoeman  
> -----Original Message-----
> From: Peter Dalgaard [mailto:p.dalgaard@biostat.ku.dk]
> Sent: Thursday, 14 October, 2004 6:52 PM
> To: Goeman, J.J. (MSTAT)
> Cc: r-devel@stat.math.ethz.ch; R-bugs@biostat.ku.dk
> Subject: Re: [Rd] is.vector() gives error (PR#7288)
> 
> 
> j.j.goeman@lumc.nl writes:
> 
> > I get a strange error:
> > 
> > > is.vector(1:10)
> > Error: recursive default argument reference
> 
> Hmm. I can't reproduce that on Linux...
>  
> > What's recursive about is.vector?
> 
> Nothing. You generally get that error if two arguments refer to
> eachother, as in
> 
> > f <- function(x=y,y=x)x+y
> > f(1)
> [1] 2
> > f(,1)
> [1] 2
> > f()
> Error in f() : recursive default argument reference
> 
> but nothing of that sort is going on in is.vector. Unless it somehow
> got redefined --- are you sure that you got the original is.vector
> there? 
> 
> >  is.vector
> function (x, mode = "any")
> .Internal(is.vector(x, mode))
> <environment: namespace:base>
> 
> The other possibility is that you're tickling a low-level, system
> dependent bug in the evaluator. Can anyone reproduce this?
> 
> -- 
>    O__  ---- Peter Dalgaard             Blegdamsvej 3  
>   c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
>  (*) \(*) -- University of Copenhagen   Denmark      Ph: 
> (+45) 35327918
> ~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: 
> (+45) 35327907
>