Re: [R] how to insert NULLs in lists?

On Fri, May 22, 2009 at 7:32 PM, wrote: > Hi Kynn: this oddity is discussed in Patrick Burn's document called "The R > Inferno". I don't recall the fix so I'm not sure if below is the same as > what his book says to do but it seems to do what you want. Wow, I sure hit the jackpot with this link

Re: [R] how to insert NULLs in lists?

Hi Kynn: this oddity is discussed in Patrick Burn's document called "The R Inferno". I don't recall the fix so I'm not sure if below is the same as what his book says to do but it seems to do what you want. x <- list() x[[1]] <- 2 x length(x) print(str(x)) x[2] <- list

Re: [R] how to insert NULLs in lists?

ome close reading and experimentation to get it. -- Bert Gunter Genentech Nonclinical Statistics -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Kynn Jones Sent: Friday, May 22, 2009 3:52 PM To: r-help@r-project.org Subject: [R] how to

[R] how to insert NULLs in lists?

I'm an experienced programmer, but learning R is making me lose the little hair I have left... > list(NULL) [[1]] NULL > length(list(NULL)) [1] 1 > x <- list() > x[[1]] <- NULL > x list() > length(x) [1] 0 >From the above experiment, it is clear that, although one can create a one-element list