[Rd] c.POSIXct

[Gabor Grothendieck]

On Thu, Aug 19, 2010 at 11:43 AM, Spencer Graves
<spencer.graves at structuremonitoring.com> wrote:
>  Hi, Gabor, Paul, et al.:
>
>
>      For classes that did not supply a "ca" method, I'd rather see the
> default being to start with the corresponding  "c" method followed by an
> effort to preserve attributes to the maximum extent feasible.  I'm not sure
> the best defaults, but at the moment, I would expect that attributes like
> "dim" and "dimnames" should always be dropped.  The current default "c"
> method preserves "names" appropriately.
>
>
>      What do you think about including another argument to
> "checkAttributes"?  I'm not sure what the options should be nor what should
> be the default, but one option should throw and error if any contradiction
> was found while another would take all attributes from the first argument
> and ignore others.
>
>

I think ca is easier to use.  It would work consistently and simply
across classes whereas fixing up c with checkAttribues is harder to
use.