[R] Getting the numeric value of difftime

[Gabor Grothendieck]

This was just discussed two days ago:

https://www.stat.math.ethz.ch/pipermail/r-help/2006-January/084453.html

On 1/13/06, Christian Neumann <christian.neumann at ai.wu-wien.ac.at> wrote:
> Hi folks,
>
> I have a small, maybe newbie, question concerning date operations.
> The follwing snippet
>
> date1 = "2005-11-20";
> date2 = "2005-11-17";
> difftime(date1, date2)
>
> results in "Time difference of 3 days". How can I extract just the
> numerical value 3?
> As a workaround I apply mean() on the result which gives me just a
> numerical value.
>
> Thanks a lot,
>
> Christian
>
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