[R] do.call, browser and traceback

Gabor Grothendieck ggrothendieck at gmail.com
Tue Feb 21 01:58:54 CET 2006


If f is long then you can get some savings like this:

  do.call("f", mtcars)  # note: used "f" rather than f

This does not solve the whole problem but its a step.

On 2/20/06, hadley wickham <h.wickham at gmail.com> wrote:
> A problem that I've encountered when using do.call a lot is very large
> stack traces, eg:
>
> f <- function(x) stop()
> do.call(error, mtcars)
> traceback()
> f <- function(x) browser()
> do.call(f, mtcars)
>
> I have hacked together my own version of traceback to fix this by
> limiting the length of each line to 80 characters, but I can't see any
> way to do something similar for browser.  Any suggestions?
>
> Thanks,
>
> Hadley
>
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