My sincere apologies. Having read http://www.r-project.org/posting-guide.html , I had wanted to post this one to R-help. Grant Rettke | ACM, ASA, FSF, IEEE, SIAM g...@wisdomandwonder.com | http://www.wisdomandwonder.com/ “Wisdom begins in wonder.” --Socrates ((λ (x) (x x)) (λ (x) (x x))) “Life has become immeasurably better since I have been forced to stop taking it seriously.” --Thompson
On Sun, Aug 10, 2014 at 1:28 PM, Joshua Ulrich <josh.m.ulr...@gmail.com> wrote: > The same comment Jeroen Ooms made about your last email also applies > to this one: it is better suited to R-help. > -- > Joshua Ulrich | about.me/joshuaulrich > FOSS Trading | www.fosstrading.com > > > On Sun, Aug 10, 2014 at 1:18 PM, Grant Rettke <g...@wisdomandwonder.com> > wrote: >> Good afternoon, >> >> Today I was working on a practice problem. It was simple, and perhaps >> even realistic. It looked like this: >> • Get a list of all the data files in a directory >> • Load each file into a dataframe >> • Merge them into a single data frame >> >> Because all of the columns were the same, the simplest solution in my >> mind was to `Reduce' the vector of dataframes with a call to >> `merge'. That worked fine, I got what was expected. That is key >> actually. It is literally a one-liner, and there will never be index >> or scoping errors with it. >> >> Now with that in mind, what is the idiomatic way? Do people usually do >> something else because it is /faster/ (by some definition)? >> >> Kind regards, >> >> >> Grant Rettke | ACM, ASA, FSF, IEEE, SIAM >> g...@wisdomandwonder.com | http://www.wisdomandwonder.com/ >> “Wisdom begins in wonder.” --Socrates >> ((λ (x) (x x)) (λ (x) (x x))) >> “Life has become immeasurably better since I have been forced to stop >> taking it seriously.” --Thompson >> >> ______________________________________________ >> 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
