[R] interaction of options(error=) and try()

[John Chambers]

Luke Tierney wrote:
> 
> On Tue, 7 Jan 2003, Vadim Ogranovich wrote:
> 
> > Dear R-Users,
> >
> > I am somewhat confused by the interplay between options(error=) and try(). I
> > set my error handler to an expression that dumps the frames and quits. Yet,
> > I thought that this handler would NOT be invoked if an error happens within
> > try(). Apparently it was. Here is the code that I ran as R BATCH:
> 
> The current implementation of try does not override the error handler
> setting provided in options.  This will change when a more
> sophisticated error handling mechanism currently under development is
> released.  For now I thnk your only option is to disable your error
> handler around the try.

The methods package has a function, trySilent(expr), that turns off the
error option while doing the try, basically what Luke is suggesting. 
(It's only in that package because it was needed there; it doesn't
involve methods.)

John Chambers


> 
> luke
> 
> --
> Luke Tierney
> University of Iowa                  Phone:             319-335-3386
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> 
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-- 
John M. Chambers                  jmc at bell-labs.com
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