class table

Extends: 
Class "vector", directly
Class "index", directly
Class "replValue", directly
Class "numLike", directly
Class "number", directly
Class "atomicVector", directly
Class "numericVector", directly
Class "replValueSp", by class "replValue", distance 2
Class "Mnumeric", by class "numericVector", distance 2

Known Subclasses: 
Class "integer", directly
Class "factor", by class "integer", distance 2
> str(ct$numeric)
Formal class 'classRepresentation' [package "methods"] with 11 slots
  ..@ slots     : list()
  ..@ contains  :List of 9
  .. ..$ vector       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "vector"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ index        :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "index"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValue    :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValue"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numLike      :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numLike"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ number       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "number"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ atomicVector :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "atomicVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numericVector:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numericVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValueSp  :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValueSp"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "replValue"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  .. ..$ Mnumeric     :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "Mnumeric"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "numericVector"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ virtual   : logi FALSE
  ..@ prototype : num(0) 
  ..@ validity  : NULL
  ..@ access    : list()
  ..@ className : chr "numeric"
  ..@ package   : chr "methods"
  ..@ subclasses:List of 2
  .. ..$ integer:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "integer"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ factor :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "factor"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "integer"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ versionKey:<externalptr> 
  ..@ sealed    : logi TRUE
> setClass(
Class=           representation=  prototype=       contains=        validity=        access=          where=           version=         sealed=          package=         S3methods=       slots=
> setClass("index", contains="character")
Error in .walkClassGraph(ClassDef, "contains", where, attr(ext, "conflicts")) : 
  class “index” may not contain itself: it contains class “character”, with a circular relation back to “index”
Error in setClass("index", contains = "character") : 
  error in contained classes ("character") for class “index”; previous definition restored to ‘.GlobalEnv’
> setClass("index", representation=c(foo="character"))
Error in validObject(.Object) : 
  invalid class “classRepresentation” object: invalid object for slot "slots" in class "classRepresentation": got class "character", should be or extend class "list"
> setClass("index", representation=c(foo="character"))
> help(setClass)
>      track <- setClass("track", slots = c(x="numeric", y="numeric"))
>      track <- setClass("index", slots = c(x="numeric", y="numeric"))
> getClass("index")
Class "index" [in ".GlobalEnv"]

Slots:
                      
Name:        x       y
Class: numeric numeric
> getClass("index",)
Class=   .Force=  where=   
> getClass("index",where=base())
Error in base() : could not find function "base"
> getClass("index",where=baseenv())
Found more than one class "index" in cache; using the first, from namespace 'Matrix'
Also defined by ‘.GlobalEnv’
Extended class definition ( "ClassUnionRepresentation" )
Virtual Class "index" [package "Matrix"]

No Slots, prototype of class "numeric"

Known Subclasses: 
Class "numeric", directly
Class "logical", directly
Class "character", directly
Class "integer", by class "numeric", distance 2
Class "signature", by class "character", distance 2
Class "className", by class "character", distance 2
Class "ObjectsWithPackage", by class "character", distance 2
Class "factor", by class "numeric", distance 3
> getClass('index')
Class "index" [in ".GlobalEnv"]

Slots:
                      
Name:        x       y
Class: numeric numeric
> getClass('index',where=baseenv())
Found more than one class "index" in cache; using the first, from namespace 'Matrix'
Also defined by ‘.GlobalEnv’
Extended class definition ( "ClassUnionRepresentation" )
Virtual Class "index" [package "Matrix"]

No Slots, prototype of class "numeric"

Known Subclasses: 
Class "numeric", directly
Class "logical", directly
Class "character", directly
Class "integer", by class "numeric", distance 2
Class "signature", by class "character", distance 2
Class "className", by class "character", distance 2
Class "ObjectsWithPackage", by class "character", distance 2
Class "factor", by class "numeric", distance 3
> methods::`.classTable`::
Error: unexpected '::' in "methods::`.classTable`::"
> methods::`.classTable`$index
Error: '.classTable' is not an exported object from 'namespace:methods'
> methods:::`.classTable`$index
$Matrix
Extended class definition ( "ClassUnionRepresentation" )
Virtual Class "index" [package "Matrix"]

No Slots, prototype of class "numeric"

Known Subclasses: 
Class "numeric", directly
Class "logical", directly
Class "character", directly
Class "integer", by class "numeric", distance 2
Class "signature", by class "character", distance 2
Class "className", by class "character", distance 2
Class "ObjectsWithPackage", by class "character", distance 2
Class "factor", by class "numeric", distance 3

$.GlobalEnv
Class "index" [in ".GlobalEnv"]

Slots:
                      
Name:        x       y
Class: numeric numeric

> methods:::`.classTable`$numeric
Class "numeric" [package "methods"]

No Slots, prototype of class "numeric"

Extends: 
Class "vector", directly
Class "index", directly
Class "replValue", directly
Class "numLike", directly
Class "number", directly
Class "atomicVector", directly
Class "numericVector", directly
Class "replValueSp", by class "replValue", distance 2
Class "Mnumeric", by class "numericVector", distance 2

Known Subclasses: 
Class "integer", directly
Class "factor", by class "integer", distance 2
> str(methods:::`.classTable`$numeric)
Formal class 'classRepresentation' [package "methods"] with 11 slots
  ..@ slots     : list()
  ..@ contains  :List of 9
  .. ..$ vector       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "vector"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ index        :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "index"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValue    :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValue"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numLike      :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numLike"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ number       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "number"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ atomicVector :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "atomicVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numericVector:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numericVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValueSp  :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValueSp"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "replValue"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  .. ..$ Mnumeric     :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "Mnumeric"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "numericVector"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ virtual   : logi FALSE
  ..@ prototype : num(0) 
  ..@ validity  : NULL
  ..@ access    : list()
  ..@ className : chr "numeric"
  ..@ package   : chr "methods"
  ..@ subclasses:List of 2
  .. ..$ integer:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "integer"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ factor :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "factor"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "integer"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ versionKey:<externalptr> 
  ..@ sealed    : logi TRUE
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> str(methods:::`.classTable`$numeric)
Formal class 'classRepresentation' [package "methods"] with 11 slots
  ..@ slots     : list()
  ..@ contains  :List of 9
  .. ..$ vector       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "vector"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ index        :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "index"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValue    :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValue"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numLike      :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numLike"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ number       :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "number"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ atomicVector :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "atomicVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ numericVector:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "numericVector"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ replValueSp  :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "replValueSp"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "replValue"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  .. ..$ Mnumeric     :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. ..@ superClass: chr "Mnumeric"
  .. .. .. ..@ package   : chr "Matrix"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "numericVector"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ virtual   : logi FALSE
  ..@ prototype : num(0) 
  ..@ validity  : NULL
  ..@ access    : list()
  ..@ className : chr "numeric"
  ..@ package   : chr "methods"
  ..@ subclasses:List of 2
  .. ..$ integer:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "integer"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr(0) 
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 1
  .. ..$ factor :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. ..@ subClass  : chr "factor"
  .. .. .. ..@ superClass: chr "numeric"
  .. .. .. ..@ package   : chr "methods"
  .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. ..@ test      :function (object)  
  .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. ..@ simple    : logi TRUE
  .. .. .. ..@ by        : chr "integer"
  .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. ..@ distance  : num 2
  ..@ versionKey:<externalptr> 
  ..@ sealed    : logi TRUE
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> str(methods:::`.classTable`$index)
List of 2
 $ Matrix    :Formal class 'ClassUnionRepresentation' [package "methods"] with 11 slots
  .. ..@ slots     : list()
  .. ..@ contains  : list()
  .. ..@ virtual   : logi TRUE
  .. ..@ prototype : num(0) 
  .. ..@ validity  : NULL
  .. ..@ access    : list()
  .. ..@ className : atomic [1:1] index
  .. .. ..- attr(*, "package")= chr "Matrix"
  .. ..@ package   : chr "Matrix"
  .. ..@ subclasses:List of 8
  .. .. ..$ numeric           :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "numeric"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr(0) 
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 1
  .. .. ..$ logical           :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "logical"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr(0) 
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 1
  .. .. ..$ character         :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "character"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr(0) 
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 1
  .. .. ..$ integer           :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "integer"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr "numeric"
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 2
  .. .. ..$ signature         :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "signature"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr "character"
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 2
  .. .. ..$ className         :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "className"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr "character"
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 2
  .. .. ..$ ObjectsWithPackage:Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "ObjectsWithPackage"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr "character"
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 2
  .. .. ..$ factor            :Formal class 'SClassExtension' [package "methods"] with 10 slots
  .. .. .. .. ..@ subClass  : chr "factor"
  .. .. .. .. ..@ superClass: chr "index"
  .. .. .. .. ..@ package   : chr "Matrix"
  .. .. .. .. ..@ coerce    :function (from, strict = TRUE)  
  .. .. .. .. ..@ test      :function (object)  
  .. .. .. .. ..@ replace   :function (from, to, value)  
  .. .. .. .. ..@ simple    : logi TRUE
  .. .. .. .. ..@ by        : chr "numeric"
  .. .. .. .. ..@ dataPart  : logi FALSE
  .. .. .. .. ..@ distance  : num 3
  .. ..@ versionKey:<externalptr> 
  .. ..@ sealed    : logi FALSE
 $ .GlobalEnv:Formal class 'classRepresentation' [package "methods"] with 11 slots
  .. ..@ slots     :List of 2
  .. .. ..$ x: atomic [1:1] numeric
  .. .. .. ..- attr(*, "package")= chr "methods"
  .. .. ..$ y: atomic [1:1] numeric
  .. .. .. ..- attr(*, "package")= chr "methods"
  .. ..@ contains  : list()
  .. ..@ virtual   : logi FALSE
  .. ..@ prototype :Formal class 'S4' [package ""] with 0 slots
 list()
  .. ..@ validity  : NULL
  .. ..@ access    : list()
  .. ..@ className : atomic [1:1] index
  .. .. ..- attr(*, "package")= chr ".GlobalEnv"
  .. ..@ package   : chr ".GlobalEnv"
  .. ..@ subclasses: list()
  .. ..@ versionKey:<externalptr> 
  .. ..@ sealed    : logi FALSE
>