My bad:
http://tolstoy.newcastle.edu.au/R/e2/help/07/09/25387.html
/Henrik
On Wed, Jun 3, 2009 at 5:07 PM, Henrik Bengtsson <h...@stat.berkeley.edu> wrote:
> Is the following a bug?
>
> Rterm -vanilla
>
>> foo <- function(x, dim=dim(x)) { str(dim) }
>> foo(1:2)
> Error in str(dim) :
> promise already under evaluation: recursive default argument
> reference or earlier problems?
>> foo(x=1:2)
> Error in str(dim) :
> promise already under evaluation: recursive default argument
> reference or earlier problems?
>
> But, this works:
>
>> foo <- function(x, dim2=dim(x)) { str(dim2) }
>> foo(1:2)
> NULL
>
>> foo <- function(x, dim=base::dim(x)) { str(dim) }
>> foo(1:2)
> NULL
>
>
>> sessionInfo()
> R version 2.9.0 Patched (2009-05-28 r48680)
> i386-pc-mingw32
>
> locale:
> LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
> States.1252;LC_MON
> ETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United
> States.1252
>
> attached base packages:
> [1] stats graphics grDevices utils datasets methods base
>
> /Henrik
>
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