ns-dblcolon | R Documentation |
Accessing exported and internal variables, i.e. R objects (including lazy loaded data sets) in a namespace.
pkg::name pkg:::name
pkg |
package name: symbol or literal character string. |
name |
variable name: symbol or literal character string. |
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.
It is typically a design mistake to use :::
in your code since the corresponding object has probably been kept
internal for a good reason. Consider contacting the package
maintainer
if you feel the need to access the object for
anything but mere inspection.
get
to access an object masked by another of the same name.
loadNamespace
, asNamespace
for more about
namespaces.
base::log base::"+" ## Beware -- use ':::' at your own risk! (see "Details") stats:::coef.default
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