[R] How deep into function calls does trycatch() work

[Peter Langfelder]

AFAIK a try or tryCatch will intercept the error thrown by stop(). Why
not try it and see if it works?

Peter
On Thu, Aug 16, 2018 at 1:05 PM Roy Mendelssohn - NOAA Federal via
R-help <r-help using r-project.org> wrote:
>
> Hi All:
>
> I am using another package in a project I have. Because of that,  I have no control on how that package behaves or what it returns.  This package has a function foo()  that calls httr::GET(),  and if it gets an error from httr::GET() it calls the following routine:
>
>
> err_handle2 <- function(x) {
>   if (x$status_code > 201) {
>     tt <- content(x, "text")
>     mssg <- xml_text(xml_find_all(read_html(tt), "//h1"))
>     stop(paste0(mssg, collapse = "\n\n"), call. = FALSE)
>   }
> }
>
> My question is if I embed my call to foo() in try...catch will that override the stop() call or am I a goner, or is there another way to override it,  given that I can't change the code to err_handle2().
>
> Thanks,
>
> -Roy
>
>
> **********************
> "The contents of this message do not reflect any position of the U.S. Government or NOAA."
> **********************
> Roy Mendelssohn
> Supervisory Operations Research Analyst
> NOAA/NMFS
> Environmental Research Division
> Southwest Fisheries Science Center
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