ns-dblcolon: Double Colon and Triple Colon Operators
Description
Accessing exported and internal variables, i.e.\ifelse{latex}{\out{~}}{ } R objects
(including lazy loaded data sets) in a namespace.
Usage
pkg::name
pkg:::name
Arguments
pkg
package name: symbol or literal character string.
name
variable name: symbol or literal character string.
Details
For a package pkg, pkg::name returns the value of the
exported variable name in namespace pkg, whereas
pkg:::name returns the value of the internal variable
name. The package namespace will be loaded if it was not
loaded before the call, but the package will not be attached to the
search path.
Specifying a variable or package that does not exist is an error.
Note that pkg::name does not access the objects in the
environment package:pkg (which does not exist until the
package's namespace is attached): the latter may contain objects not
exported from the namespace. It can access datasets made available by
lazy-loading.
See Also
get to access an object masked by another of the same name.
loadNamespace, asNamespace for more about
namespaces.