Internal Generic Functions
Many R-internal functions are generic and allow methods to be written for.
The following primitive and internal functions are generic,
i.e., you can write
methods for them:
is.name is a synonym for
dispatches methods for the latter.
Note that all of the group generic functions are also internal/primitive and allow methods to be written for them.
.S3PrimitiveGenerics is a character vector listing the
primitives which are internal generic and not group generic.
unlist are the internal
non-primitive functions which are internally generic.
For efficiency, internal dispatch only occurs on objects, that
is those for which
is.object returns true.
methods for the methods which are available.
- internal generic