Thanks Chuck and Rolf.
While Rolf’s code also works on the dput that I actually gave you (a smaller subset of the full dataset), it failed to work on the larger dataset, because there are further exceptions: input[[i]]$content[[1]] is sometimes a list, sometimes a character vector, and sometimes input[[i]]$content simply returns list(). Chuck’s solution however bypasses this and works on the full dataset (which was 8mb, which is why I didn’t upload it as a gist). Best, Aron -- Aron Lindberg Doctoral Candidate, Information Systems Weatherhead School of Management Case Western Reserve University aronlindberg.github.io On Fri, Feb 20, 2015 at 12:44 AM, Charles Berry <ccbe...@ucsd.edu> wrote: > Aron Lindberg <aron.lindberg <at> case.edu> writes: >> >> Hi Everyone, >> >> I'm working on a thorny subsetting problem involving list of lists. I've put >> a > dput of the data here: >> >> https://gist.githubusercontent.com/aronlindberg/b916dee897d051ac5be5/ > raw/a78cbf873a7e865c3173f943ff6309ea688c653b/dput >> > IIUC, you want the value of every list element that is named "sha" and > that name will only apply to atomic objects. > If so, this should do it. >> input <- dget("/tmp/dpt") >> shas <- unlist( input, use.names=FALSE )[ grepl( "sha", >> names(unlist(input)))] >> input[[67]]$content[[1]]$sha > [1] "58cf43ecdc1beb7e1043e9de612ecc817b090f15" >> which(input[[67]]$content[[1]]$sha == shas ) > [1] 194 > HTH, > Chuck > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
