Re: [Rd] 'unique' error message is printed despite silent=TRUE (PR#13547)

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Sun, 22 Feb 2009 15:25:26 -0500

On 22/02/2009 3:16 PM, Peter Dalgaard wrote:
> macrakis@alum.mit.edu wrote:

>> In 2.8.0/Windows Vista:
>>
>> When 'unique' gives a type error message, it prints out even if errors
>> are being caught:
>>
>>> try(unique(quote(hello)),silent=TRUE)
>> hello
>>
>> This comes from the .Internal unique routine:
>>
>>> try(.Internal(unique(quote(hello),NULL,NULL)),silent=TRUE)
>> hello
>>
>> I guess it is using the internal equivalent of print rather than the
>> internal equivalent of stop.
>>

>
> silent=TRUE is a red herring (this has nothing to do with try()).
>
> However, inside do_duplicated (unique.c) we have
>
> if (!isVector(x)) {
> PrintValue(x);
> error(_("%s() applies only to vectors"),
> (PRIMVAL(op) == 0 ? "duplicated" : "unique"));
> }
>
> This is due to
>
> ------------------------------------------------------------------------
> r32306 | ripley | 2004-12-23 22:06:27 +0100 (Thu, 23 Dec 2004) | 2 lines
>
> Apparently unique/duplicated are supposed to work on NULL, despite their
> help!
>
> ...which makes little sense to explain the PrintValue(x). I suspect this
> is a debugging printout that was inadvertently left in.

Now removed.

Duncan Murdoch



R-devel_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel Received on Sun 22 Feb 2009 - 19:27:17 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sun 22 Feb 2009 - 20:30:34 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-devel. Please read the posting guide before posting to the list.

list of date sections of archive