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I'm working on an R package and (in the package's code) need to determine the version number when a certain function is called.
packageVersion("mypackage") works, but I'd rather not hard code the name of the package. How can I ask "what's the name of the package I'm in"? (Or directly get the version number of the package I'm in.)
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Compiled code built into the R interpreter. If you want to view the code built-in to the R interpreter, you will need to download/unpack the R sources; or you can view the sources online via the R Subversion repository or Winston Chang's github mirror.
But R packages have fairly strict naming rules: There are three formal requirements: the name can only consist of letters, numbers and periods, i.e., .; it must start with a letter; and it cannot end with a period.
You can find thousands of R packages online. The two biggest sources of packages are CRAN (Comprehensive R Archive Network) and Bioconductor, but some packages are available elsewhere.
This mailing list thread describes packageName().
(As Martin pointed out in comments.)
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I have not handled working with packages. But I am assuming you can use something like
packageVersion(getPackageName())
While you can supply parameters to getPackageName to search for the package name you are looking for, I think just supplying it without any parameters will get the current environment, (and in your case) the current package.
Source: The R Reference Index, available at https://cran.r-project.org/manuals.html
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