[Rd] namespace crash on S3method("as.ff",function)

"Jens Oehlschlägel" oehl_list at gmx.de
Mon Nov 5 13:41:50 CET 2007

Dear all,

I have defined a generic as.ff(x, ...) and a method as.ff.function(x, ...) which converts a standard R function x into a chunked version operating on large ff objects. Everything works fine, but when registering 


in NAMESPACE, the installation fails with some kind of parsing error:

  adding build stamp to DESCRIPTION
  installing NAMESPACE file and metadata
Fehler in parse(nsFile) : Unerwartetes ')' bei
349: S3method("as.ff",function)
Calls: <Anonymous> -> parseNamespaceFile -> parse
Ausf³hrung angehalten
make[2]: *** [nmspace] Error 1
make[1]: *** [all] Error 2
make: *** [pkg-ff] Error 2
*** Installation of ff failed ***

Is this a bug? Any ideas?

Best regards


P.S. with as.ff() we can do things like
ffx <- as.ff(x) # as.ff.default() turns a standard R object into an ff object stored on disk
as.ff(log)(ffx) # as.ff.function() turns 'log' into a function that we can call on ffx: taking the log of an almost arbitrarily large object

> version
platform       i386-pc-mingw32             
arch           i386                        
os             mingw32                     
system         i386, mingw32               
major          2                           
minor          6.0                         
year           2007                        
month          10                          
day            03                          
svn rev        43063                       
language       R                           
version.string R version 2.6.0 (2007-10-03)

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