There is also another fortune: > fortune('toad')
The problem here is that the $ notation is a magical shortcut and like any other magic if used incorrectly is likely to do the programmatic equivalent of turning yourself into a toad. -- Greg Snow (in response to a user that wanted to access a column whose name is stored in y via x$y rather than x[[y]]) R-help (February 2012) On Thu, Dec 27, 2012 at 5:33 AM, jim holtman <jholt...@gmail.com> wrote: > it is also a fortune. > > > fortune('parse') > > If the answer is parse() you should usually rethink the question. > -- Thomas Lumley > R-help (February 2005) > > > > On Thu, Dec 27, 2012 at 5:44 AM, Heramb Gadgil <heramb.gad...@gmail.com> > wrote: > > I am not sure why "Never ever!" > > > > Can you please elaborate. What are the negatives about the method > > > > Warm Regards, > > Heramb M. Gadgil > > > > > > On Thu, Dec 27, 2012 at 3:50 PM, Uwe Ligges < > lig...@statistik.tu-dortmund.de > >> wrote: > > > >> > >> > >> On 27.12.2012 08:09, Heramb Gadgil wrote: > >> > >>> eval(parse(text=paste0("**cvtest$",lambda.rule))) > >>> > >> > >> No, never ever! > >> > >> There is an R idiom made for it: > >> > >> cvtest[[lambda.rule]] > >> > >> Uwe Ligges > >> > >> > >> > >> > >> > >> > >> > >> I hope this works. > >>> > >>> On Wed, Dec 19, 2012 at 12:57 AM, Thomas Stewart > >>> <tgs.public.m...@gmail.com>**wrote: > >>> > >>> Soyeon- > >>>> > >>>> A possible solution: > >>>> > >>>> get(lambda.rule,envir=**list2env(cvtest)) > >>>> > >>>> > >>>> On Tue, Dec 18, 2012 at 12:34 PM, Soyeon Kim <yunni0...@gmail.com> > >>>> wrote: > >>>> > >>>> Dear my R friends, > >>>>> > >>>>> I want to get a number from a list using paste function. > >>>>> In my example, > >>>>> lambda.rule <- "lambda.1se" > >>>>> cvtest is a list (result from cv.glmnet) > >>>>> and > >>>>> cvtest$lambda.1se > >>>>> [1] 1.308973 > >>>>> > >>>>> I want to call the value using paste function. > >>>>> I used get function but there was an error. > >>>>> test <- get(paste("cvtest$",lambda.**rule, sep="")) > >>>>> Error in get(paste("cvtest$", lambda.rule, sep = "")) : > >>>>> object 'cvtest$lambda.1se' not found > >>>>> > >>>>> Do you guys know how to solve this issue? > >>>>> > >>>>> Thank you so much in advance and merry Christmas! > >>>>> > >>>>> Soyeon > >>>>> > >>>>> ______________________________**________________ > >>>>> R-help@r-project.org mailing list > >>>>> https://stat.ethz.ch/mailman/**listinfo/r-help< > https://stat.ethz.ch/mailman/listinfo/r-help> > >>>>> PLEASE do read the posting guide > >>>>> http://www.R-project.org/**posting-guide.html< > http://www.R-project.org/posting-guide.html> > >>>>> and provide commented, minimal, self-contained, reproducible code. > >>>>> > >>>>> > >>>>> > >>>>> > >>>> [[alternative HTML version deleted]] > >>>> > >>>> ______________________________**________________ > >>>> R-help@r-project.org mailing list > >>>> https://stat.ethz.ch/mailman/**listinfo/r-help< > https://stat.ethz.ch/mailman/listinfo/r-help> > >>>> PLEASE do read the posting guide > >>>> http://www.R-project.org/**posting-guide.html< > http://www.R-project.org/posting-guide.html> > >>>> and provide commented, minimal, self-contained, reproducible code. > >>>> > >>>> > >>> [[alternative HTML version deleted]] > >>> > >>> ______________________________**________________ > >>> R-help@r-project.org mailing list > >>> https://stat.ethz.ch/mailman/**listinfo/r-help< > https://stat.ethz.ch/mailman/listinfo/r-help> > >>> PLEASE do read the posting guide http://www.R-project.org/** > >>> posting-guide.html <http://www.R-project.org/posting-guide.html> > >>> and provide commented, minimal, self-contained, reproducible code. > >>> > >>> > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > 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. > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > Tell me what you want to do, not how you want to do it. > > ______________________________________________ > 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. > -- Gregory (Greg) L. Snow Ph.D. 538...@gmail.com [[alternative HTML version deleted]] ______________________________________________ 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.