On Sun, 30 Nov 2003, Gabor Grothendieck wrote:
>
>
> Thanks. I guess we have to be content to approximate this via:
>
> apropos("POSIXt$|POSIXct$")
>
> although this supposes we know that POSIXct inherits from POSIXt
> and its not clear that there is a reliable way to discover that
> for S3 classes.
It's actually easier for S3 classes, since there it is objects that
inherit, not classes: eg
> class(.leap.seconds)
[1] "POSIXt" "POSIXct"
-thomas
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