| \name{packageName} |
| \alias{packageName} |
| \title{Find Package Associated with an Environment} |
| \description{ |
| Many environments are associated with a package; this function |
| attempts to determine that package. |
| } |
| \usage{ |
| packageName(env = parent.frame()) |
| } |
| \arguments{ |
| \item{env}{ |
| The environment whose name we seek. |
| } |
| } |
| \details{ |
| |
| Environment \code{env} would be associated with a package if |
| \code{\link{topenv}(env)} is the namespace environment for that |
| package. Thus when \code{env} is the environment associated with |
| functions inside a package, or local functions defined within them, |
| \code{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. \code{packageName} will return \code{NULL} in these cases. |
| } |
| \value{ |
| A length one character vector containing the name of the package, |
| or \code{NULL} if there is no name. |
| } |
| \seealso{ |
| \code{\link[methods]{getPackageName}} is a more elaborate function |
| that can construct a name if none is found. |
| } |
| \examples{ |
| packageName() |
| packageName(environment(mean)) |
| } |
| \keyword{ utilities } |
