That did it.
Thanks Henrique!

Tal

----------------Contact
Details:-------------------------------------------------------
Contact me: Tal.Galili@gmail.com |  972-52-7275845
Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
www.r-statistics.com (English)
----------------------------------------------------------------------------------------------




On Tue, Mar 16, 2010 at 11:34 PM, Henrique Dallazuanna <wwwhsd@gmail.com>wrote:

> Try this:
>
> body(foo)[[grep('^line2', body(foo))]][[3]] <- 2
>
> On Tue, Mar 16, 2010 at 6:31 PM, Tal Galili <tal.galili@gmail.com> wrote:
> > Hello,
> >
> > Let's say we have the following function:
> >
> > foo <- function(x)
> >
> > {
> >
> >
> >    line1 <- x
> >
> >
> >    line2 <- 0
> >
> >
> >    line3 <- line1 + line2
> >
> >
> >    return(line3)
> >
> > }
> >
> >  And that we want to change the second line to be:
> >
> >    line2 <- 2
> >
> >  How would you do that?
> >
> > The two ways I know of are either to use
> >
> > fix(foo)
> >
> >  And change the function.
> >
> > Or to just write the function again.
> >
> > Is there another way?
> >
> > *What I would like* is for some way to represent the function as a vector
> of
> > strings (well, characters), then change one of it's values, and then turn
> it
> > into a function again.
> >
> > The reason I am asking is that I just published a post online where I
> used a
> > function to which I did a minor tweak (so to improve it's output for my
> > particular case).
> > This tweaking was just adding one line of code, to a function who's
> length
> > is 187 lines of code. So instead of repasting all the function on my
> blog, I
> > decided to just explain how to edit it.  But I would rather have a simple
> > code that edited the function for the reader.
> >
> >
> > Thanks,
> > Tal
> >
> > ----------------Contact
> > Details:-------------------------------------------------------
> > Contact me: Tal.Galili@gmail.com |  972-52-7275845
> > Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
> > www.r-statistics.com (English)
> >
> ----------------------------------------------------------------------------------------------
> >
> >        [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > 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.
> >
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>

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