> -----Original Message-----
> From: r-help-boun...@r-project.org
> [mailto:r-help-boun...@r-project.org] On Behalf Of Henrik Bengtsson
> Sent: Sunday, November 21, 2010 8:17 AM
> To: David Winsemius
> Cc: r-help; madr
> Subject: Re: [R] [beginner] simple keyword to exit script ?
>
> Better is probably to return() from a function, i.e. define a function
> in your script and call that at the end of your function, e.g.
This list gets a lot of questions about how to
do things with 'scripts' that are easily done with
functions. The S language (implemented by R and S+)
is oriented around functions, not scripts. Functions
easily call other functions but scripts cannot easily
call other scripts. Scripts are handy for one-off
things, but if you want to use the code in them again
it is best to put it into functions (and, after not
too long, the functions into a package). If you don't
accept that fact you have no end of frustration
with the language. (I realize others may have
different opinions.)
Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
>
> - - - -
>
> main <- function() {
> # bla
> # bla
> if (something) {
> return();
> }
> # otherwise
> # bla
> }
>
> main();
>
> - - - -
>
> Otherwise, here is a hack:
>
> stopQuietly <- function(...) {
> blankMsg <- sprintf("\r%s\r", paste(rep(" ", getOption("width")-1L),
> collapse=" "));
> stop(simpleError(blankMsg));
> } # stopQuietly()
>
> > stopQuietly()
>
> >
>
> The "Error:" message will be replaced by blanks. It will still output
> an empty line. May not work in all settings; depends on terminal etc.
> You need to define stopQuietly() in your script.
>
> My $.02
>
> /Henrik
>
> On Sun, Nov 21, 2010 at 7:56 AM, David Winsemius
> <dwinsem...@comcast.net> wrote:
> >
> > On Nov 21, 2010, at 10:43 AM, madr wrote:
> >
> >>
> >> Is there any way of suppressing that error, like in other
> programming
> >> languages you can specifically invoke an error or simply exit,
> >
> > If you are in a function, then return()
> >
> >> like after
> >> user input, exiting then is not always identical with
> error , there are
> >> cases when it is intended behavior. I thought R makes that
> distinction.
> >
> > Provide some code. (You did say you had a script.) The
> answer probably
> > depends on context and you are not providing any.
> >
> > --
> >
> > David Winsemius, MD
> > West Hartford, CT
> >
> > ______________________________________________
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> > 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.
> >
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>
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