Using the list function defined here: http://tolstoy.newcastle.edu.au/R/help/04/06/1430.html
list[m, n] <- as.list(dim(iris)) mylist <- as.list(1:5) list[Head, Tail] <- list(mylist[[1]], mylist[-1]) On Wed, Oct 29, 2008 at 4:39 PM, Alexy Khrabrov <[EMAIL PROTECTED]> wrote: > I found there's a very good functional set of operations in R, such as apply > family, Hadley Wickham's lovely plyr, etc. There's even a Reduce (a.k.a. > fold). Now I wonder how can we do pattern-matching? > > E.g., now I split dimensions like this: > > m <- dim(V)[1] # R > n <- dim(V)[2] # still R > > While even Matlab allows for > > [m,n] = size(V) % MATLAB! > > Ideally I'd be able to say, > > <<x,y>> <- dim(V) > > -- where <<.,.>> is some magic needed. > > Similarly, to break lists, we'd need, in a MLish notation, > > match L with > | head::tail => ... > | () => ; > > What can be done in R now to simulate it, and/or how Rish is it to add > something like that? > > Cheers, > Alexy > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.