Use 'local' > x <- 1 > local({ + x <- 3 + print(x) + }) [1] 3 > print(x) [1] 1 > >
On Sun, Jan 31, 2010 at 8:56 PM, Peng Yu <pengyu...@gmail.com> wrote: > I'm wondering if there is a way to make blocks of code independent > from each other. Please see the following example for what I mean. > > x=1 > > ## is there a way to make the following assignment not affect the above x? > ## in C++, I can use {} to make the effect local. Is there an > equivalent construct in R? > x=3 > <do something with the new value of x> > ### > > print(x) # I don't want the value of x change to 3. > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.