Gabor Grothendieck wrote:
>
> You have a recursive reference. Try using a different name other
> than class. For example, in the following we use class. with a dot
> at the end
> (so that abbreviation of it still allows the user to write class):
>
One year using R, and I hadn't known that I co
On 9/12/2007 12:48 PM, Sandy Weisberg wrote:
> Can anyone explain what I'm doing wrong here:
>
> > fred <- data.frame()
> > class(fred)
> [1] "data.frame"
> > test.fn <- function(x,class=class(x)) {class}
> > test.fn(fred)
> Error in test.fn(fred) : promise already under evaluation: recursive
You have a recursive reference. Try using a different name other than
class. For example, in the following we use class. with a dot at the end
(so that abbreviation of it still allows the user to write class):
fred <- data.frame()
test.fn <- function(x,class.=class(x)) {class.}
test.fn(fred) # "
Can anyone explain what I'm doing wrong here:
> fred <- data.frame()
> class(fred)
[1] "data.frame"
> test.fn <- function(x,class=class(x)) {class}
> test.fn(fred)
Error in test.fn(fred) : promise already under evaluation: recursive
default argument reference or earlier problems?
R 2.5.1 on
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