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Last data update: 2014.03.03

R: List all types for a method

listTypes

R Documentation

List all types for a method

Description

List all types for a method; types are variants for a given method defined in a way it is easy to add other variants dynamically (on the contrary to a usual type = or which = argument, like in plot.ts() or plot.lm(), respectively.

Usage

listTypes(method, class = "default", strict = FALSE)

Arguments

`method`	the method name.
`class`	the class name.
`strict`	do we list only types for the class (`TRUE`), or all possible types, including for inherited objects, and default ones (`FALSE`, by default)?

Value

A vector with character strings with methods' type names.

Note

This function is only useful for special generic functions with type argument like view, copy or export. These functions offer a mechanism to easily add custom types, and the present function list them. For S3 objects a type is simply a function whose name is : <method>_<type>.<class>. So, adding new <type>s for <method> is very easy to implement.

Author(s)

Philippe Grosjean <phgrosjean@sciviews.org>

Examples

listTypes("view")  # All default view types currently defined
listTypes("view", "data.frame")
listTypes("view", "data.frame", TRUE) # None, except if you defined custom views!