Formal Method System Placeholders

Description

These routines are primitives used with the methods package. They should not be used without it and do not need to be called directly in any case.

standardGeneric:

dispatch the method defined for generic function named f, using the actual arguments in the frame from which standardGeneric is called.

objWithClass:

return the result of setting the class of object to value. Defined as a separate primitive function because R types cannot generally be changed in place.

dataClass:

returns a single string for the class of object even in the case that the object has an old-style class attribute with multiple strings.

topicName:

the string used internally to find documenation of the given type and topic. Called by the ? operator and the special prompt functions in the methods package.

Usage

standardGeneric(f)
objWithClass(object, value)
dataClass(object)
topicName(type, topic)

Author(s)

John Chambers