Re: [Rd] Getting param names of primitives

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Wed, 11 Jul 2007 05:48:56 +0100 (BST)

> formals(args(log))

$x

$base
exp(1)

gives what formals(log) used to.

On Wed, 11 Jul 2007, miguel manese wrote:

> Hi,
>
> In the latest R this does not work anymore
>
> args <- formals(log)
>
> because log is primitive. Is there any other way to get the argument
> list? I just need the name of the parameter to display some error
> message about it. I have looked at args() but I can't find anything to
> extract the argument names from it.
>
> Thanks,
> M. Manese

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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