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Many environments are associated with a package; this function attempts to determine that package.
packageName(env = parent.frame())
The environment whose name we seek.
A length one character vector containing the name of the package,
or NULL
if there is no name.
Environment env
would be associated with a package if
topenv(env)
is the namespace environment for that
package. Thus when env
is the environment associated with
functions inside a package, or local functions defined within them,
packageName
will normally return the package name.
Not all environments are associated with a package: for example,
the global environment, or the evaluation frames of functions defined
there. packageName
will return NULL
in these cases.
getPackageName
is a more elaborate function
that can construct a name if none is found.
# NOT RUN {
packageName()
packageName(environment(mean))
# }
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