That is an error in Splus 8.3. It must have changed quite a while ago - it was an error in Splus 5.1, released in 1999 and I don't have an older version handy right now. Current behavior is > 1:10 + 0:1 [1] 1 3 3 5 5 7 7 9 9 11 > 1:10 + 0:2 Problem in 1:10 + 0:2: length of longer operand (10) should be a multiple of length of shorter (3) Use traceback() to see the call stack
I vaguley recall running into some problems when we made the change, but I think it was only in our internal test suite, using a trick like the above to produce a patterned sequence. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-devel-boun...@r-project.org [mailto:r-devel-boun...@r-project.org] On > Behalf > Of Thomas Lumley > Sent: Monday, September 24, 2012 7:45 PM > To: R-devel > Subject: [Rd] error on uneven recycling? > > Is there some reason why > > > (1:2)+(1:3) > [1] 2 4 4 > Warning message: > In (1:2) + (1:3) : > longer object length is not a multiple of shorter object length > > can't be made into an error? I realise it was there in S-PLUS, but > since it produces a warning there can't be many examples on CRAN or > Bioconductor using it, and I can't think of any situation where it > would be used deliberately. > > -thomas > > -- > Thomas Lumley > Professor of Biostatistics > University of Auckland > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
