Yes, there will be some reduction in speed: E.g.,
> system.time(replicate(1e5, (function() sum(1:10))())) user system elapsed 0.696 0.022 0.729 > system.time(replicate(1e5, sum(1:10))) user system elapsed 0.292 0.006 0.306 But it's not much: 3 tenths of a second for 10,000 calls. It's certainly worth it for ease of readibility and debugging. Michael On Thu, Nov 10, 2011 at 10:07 AM, Christofer Bogaso <bogaso.christo...@gmail.com> wrote: > Dear all. Let say I have a group of codes which will be used in many places > in my overall R-code files. These group of codes will be used within a > for-loop (with a big length, like 10000 times) and also many other places > outside of that for loop. As this group of codes are being used in many > places, I thought to put them within a user-defined function. > > Here my question is, is there any speed reduction if I put them within a > function (I think there may be some speed reduction at least within > for-loop, because that loop needs to call that function many times), > relative to if I used that group of codes as-it-is in many places? > > Thanks and regards, > > ______________________________________________ > 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.
