Internal Generic Functions

Description

Many R-internal functions are generic and allow methods to be written for.

Details

The following primitive and internal functions are generic, i.e., you can write methods for them:

[, [[, $, [<-, [[<-, $<-,

length, length<-,

dimnames<-, dimnames, dim<-, dim,

c, unlist,

as.character, as.vector, is.array, is.atomic, is.call, is.character, is.complex, is.double, is.environment, is.function, is.integer, is.language, is.logical, is.list, is.matrix, is.na, is.nan, is.null, is.numeric, is.object, is.pairlist, is.recursive, is.single, is.symbol, rep and seq.int.

Note that most of the group generic functions are also internal/primitive and allow methods to be written for them.

See Also

methods for the methods of non-Internal generic functions.