I should amend this: it would be a method for the List class. Many of the Vector classes are "atomic" and coercing them to a list is either not supported or may yield an undesired result. For example, coercing an IRanges to a list yields a list of integer vectors with the sequence from start to end. We don't have an lapply,Vector for this reason. I actually already made a commented-out mcseqapply. I think I aborted the mc* stuff back before the parallel package existed, just to avoid adding a dependency on multicore. With parallel in base R, it's reasonable to add these methods. If no one else complains, I'll move ahead. Michael On Mon, Sep 24, 2012 at 6:23 AM, Michael Lawrence wrote: > It definitely makes sense to have a generic for mclapply that dispatches > on Vector. Perhaps also for some of the other apply functions in the > parallel package. > > Michael > > > On Mon, Sep 24, 2012 at 3:58 AM, Hahne, Florian < > florian.hahne@novartis.com> wrote: > >> Would it be possible to make mclapply aware of the Vector class? >> Currently, the following line causes them to be coerced into a regular >> list which could be rather expensive for instance in the case of >> GrangesLists: >> if (!is.vector(X) || is.object(X)) >> X <- as.list(X) >> >> >> I guess something like >> if ((!is.vector(X) && !is(X, "Vector")) || is.object(X)) >> X <- as.list(X) >> would do the trick. >> >> Or am I missing something obvious here? >> Cheers, >> Florian >> >> _______________________________________________ >> Bioc-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/bioc-devel >> > > [[alternative HTML version deleted]]