[R] = or <-

[Gabor Grothendieck]

No function accepts <- in place of =.  In the first
of the 4 examples below we are simply setting
variable b to 10 and then passing it to f as its
first argument. f(b = 10) would be different since
that specifies that we want argument b to take
on the value of 10.

f <- function(a=1, b=2) a-b

# these 5 lines below all give the same result
# except the first 3 also have the side effect
# of creating a variable b
f(b <- 10)
b <- 10; f(b)
f(a = b <- 10)
f(10)
f(a=10)

On Mon, Jun 2, 2008 at 10:05 AM, Sébastien <pomchip at free.fr> wrote:
> Dear R-users,
>
> I have written a short VB application to clean and format my R code.
> Everything works fine except one small issue that I did not expected; it is
> related the automatic replacement of assignment signs from "=" to "<-". Most
> functions or arguments seem to accept either = or <-, but some don't (e.g.
>  ls(all=TRUE)). The result is that my supposedly clean codes do not run
> anymore :-(
> Is there a way to know the list of arguments/functions that do not accept
> "<-" signs ?
>
> Thanks in advance.
>
> Sebastien
>
> ______________________________________________
> R-help at 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.
>