RE: R-beta: Still want restart() in R

Ross Ihaka (ihaka@stat.auckland.ac.nz)
Fri, 24 Oct 1997 08:09:56 +1300 (NZDT)


Date: Fri, 24 Oct 1997 08:09:56 +1300 (NZDT)
From: Ross Ihaka <ihaka@stat.auckland.ac.nz>
Message-Id: <199710231909.IAA00527@stat1.stat.auckland.ac.nz>
To: r-help@stat.math.ethz.ch
Subject: RE: R-beta: Still want restart() in R

> From: Martyn Plummer <plummer@iarc.fr>

> >People's valiant efforts to sort out CODA aside, the burning question remains:
> >has anybody made any headway with restart()? or any other way (and there may 
> >well be better) of trapping `fatal' errors from calls within a function.

> I don't think restart() is necessary - it just seems like an invitation
> to bad programming to me. I would, however, like a safe parse function
> which would return a user-defined error code instead of crashing if
> the input is invalid.  Such a function could then be safely called
> from another function and allow very general user input. 

On monday (assigments marked, exam ready :-) I will be starting a careful
rewrite of the parser.  This is mainly intended to support an X GUI, but
it will have the side effect of fixing the behavior you describe.
	Ross
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