> Did you read ?'<<-' as > Peter suggested? Better yet, do not read ?'<<-' and do not use <<-.
Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf > Of Ista Zahn > Sent: Thursday, April 26, 2012 6:44 AM > To: michaelyb > Cc: r-help@r-project.org > Subject: Re: [R] understanding the FUNCTION function > > On Thu, Apr 26, 2012 at 8:56 AM, michaelyb <cel81009...@gmail.com> wrote: > > Peter, your solution is actually very interesting. I have never seen or > > heard > > of before. I will look into it. > > > > Meanwhile, look at this example instead: > > fac<-function(x){a<-1 > > for(i in 1:x){ > > a<-a*i > > print(a)}} > > The result is : > >> fac(5) > > [1] 1 > > [1] 2 > > [1] 6 > > [1] 24 > > [1] 120 > > > > However, when I try your way: > > fac<-function(x){a<-1 > > for(i in 1:x){ > > a<<-a*i > > print(a)}} > > > > I get: > >> fac(5) > > [1] 1 > > [1] 1 > > [1] 1 > > [1] 1 > > [1] 1 > > > > Why isn't it overriding "a", and giving me 120? > > Because you are assigning a in the global environment and then > printing a from the function environment. Did you read ?'<<-' as > Peter suggested? > > Best, > Ista > > > PS: I am aware that I could use the FACTORIAL function, but I used this > > example for illustration purposes. > > > > Thank you again! > > > > -- > > View this message in context: > > http://r.789695.n4.nabble.com/Using-FUNCTION-to- > create-usable-objects-tp4588681p4589752.html > > Sent from the R help mailing list archive at Nabble.com. > > > > ______________________________________________ > > 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. ______________________________________________ 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.
