[R] How to know created time of object in R?
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Nov 6 08:02:49 CET 2007
On Tue, 6 Nov 2007, Dong-hyun Oh wrote:
> Dear UseRs,
> I would like to know the created time and date of specific object.
> Is there any function for it?
There isn't even the concept. Most objects in R are a collection of
SEXPRECs created at different times. Suppose you create a data frame out
of existing columns, and then later change the names? What does 'created'
mean for the data frame?
In any case, none of the possibly relevant date-times is stored.
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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