> On Apr 19, 2024, at 1:36 PM, CRAN.r via R-help <r-help@r-project.org> wrote:
>
> Is there a way to pass a modified argument from an S3 generic to a method?
> Here's a non-working example that I want to return "abcd".
>
grep-ing the source code is often a good way to answer a question like this.
Particularly, with NextMethod there seem to be plenty of instances in which the
original arguments are modified before a call to a method.
One such is `t.data.frame` and there seem to be other methods for "data.frame"
objects that modify the objects before calling NextMethod.
HTH,
Chuck
> test <- function(x, y = NULL){
> y <- "abcd"
> UseMethod("test")
> }
> test.default <- function(x, y = NULL) y
> test(x = 3)
>
> Is that possible? I've looked around a lot, but can't find any examples or
> discussion.
>
> Jay
>
> From nobody Sat Apr 20 10:07:59 2024
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> Subject: passing a modified argument to an S3 method
> Date: Fri, 19 Apr 2024 20:36:22 +0000
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>
> Is there a way to pass a modified argument from an S3 generic to a method?
> Here's a non-working example that I want to return "abcd".
>
> test <- function(x, y = NULL){
> y <- "abcd"
> UseMethod("test")
> }
> test.default <- function(x, y = NULL) y
> test(x = 3)
>
> Is that possible? I've looked around a lot, but can't find any examples or
> discussion.
>
> Jay
>
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