modes_classes

spoken type	class	mode	typeof	storage.mode
logical vector	logical	logical	logical	logical
integer vector	integer	numeric	integer	integer
numeric vector	numeric	numeric	double	double
complex vector	complex	complex	complex	complex
character vector	character	character	character	character
raw vector	raw	raw	raw	raw
factor	factor	numeric	integer	integer
logical matrix	matrix	logical	logical	logical
numeric matrix	matrix	numeric	double	double
logical array	array	logical	logical	logical
numeric array	array	numeric	double	double
list	list	list	list	list
pairlist	pairlist	pairlist	pairlist	pairlist
data frame	data.frame	list	list	list
closure function	function	function	closure	function
primitive function	function	function	builtin	function
special function	function	function	special	function
environment	environment	environment	environment	environment
null	NULL	NULL	NULL	NULL
formula	formula	call	language	language
expression	expression	expression	expression	expression
call	call	call	language	language
name	name	name	symbol	symbol
paren in expression	(	(	language	language
brace in expression	{	call	language	language
S3 lm object	lm	list	list	list
S4 dummy object	dummy	S4	S4	S4
external pointer	externalptr	externalptr	externalptr	externalptr

################
### examples ###
################

x <- 1               ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "numeric" "numeric" "double"  "double"

x <- letters         ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "character" "character" "character" "character"

x <- TRUE            ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "logical" "logical" "logical" "logical"

x <- cars            ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "data.frame" "list"       "list"       "list"

x <- cars[1]         ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "data.frame" "list"       "list"       "list"

x <- cars[[1]]       ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "numeric" "numeric" "double"  "double"

x <- matrix(cars)    ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "matrix" "list"   "list"   "list"

x <- new.env()       ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "environment" "environment" "environment" "environment"

x <- expression(1+1) ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "expression" "expression" "expression" "expression"

x <- ls              ; c(class(x), mode(x), storage.mode(x), typeof(x))

## [1] "function" "function" "function" "closure"