Put together a list and we can see what might make sense. If we did
take this on it would be good to think about providing a reasonable
mechanism for addressing the small flaw in this function as it is
defined here.
Best,
luke
On Wed, 27 Apr 2011, Hadley Wickham wrote:
This has the side effect of ignoring errors
and even hiding the error messages. If you
are concerned about multiple calls to on.exit()
in one function you could define a new function
like
withOptions <- function(optionList, expr) {
oldOpts <- options(optionList)
on.exit(options(oldOpts))
expr # lazily evaluate
}
I wish R had more functions like this. This sort of behaviour is also
useful when you open connections or change locales. Ruby's blocks
provide nice syntactic sugar for this idea.
Hadley
--
Luke Tierney
Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa Phone: 319-335-3386
Department of Statistics and Fax: 319-335-3017
Actuarial Science
241 Schaeffer Hall email: [email protected]
Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
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