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Of course, Brian is correct that the problem requires a great deal more specificity. However, one could imagine that it would be useful to tag objects created by top-level expressions with the time they were created in much the same way that the file system provides a modification time. It is easy enough to add the time as an attribute of an object, but I imagine you are asking how to automate this. To this end, you could do something with the addTaskCallback() function which allows you to specify a function that is invoked at the completion of each top-level evaluation. You could get store some useful time information with the object or perhaps go further and work with the expressions to determine dependencies and capture the dependencies in a series of computations. D. 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? > > Thank you in advance. > > > Sincerely, > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHMJ579p/Jzwa2QP4RAhyoAJ9aFlRXAKP6bfmgol2MDTSQzyujRACfdCaX G19v83tjpMOqyUIfeBRn0/k= =TBXf -----END PGP SIGNATURE----- ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
