[R] getSubClasses()?

[Martin Morgan]

On 05/20/2010 07:47 AM, Albert-Jan Roskam wrote:
> Hi,
> 
> Is there a built in function that returns a character vector of all
> subclasses of a given superclass? showClass(Class = "SomeClass")
> contains the info that I want, but I don't know how to access it. 

Hi Albert-Jan --

Maybe

> slotNames(class(getClass("vector")))
 [1] "slots"      "contains"   "virtual"    "prototype"  "validity"
 [6] "access"     "className"  "package"    "subclasses" "versionKey"
[11] "sealed"
> names(getClass("vector")@subclasses)
 [1] "logical"            "numeric"            "character"
 [4] "complex"            "integer"            "raw"
 [7] "expression"         "list"               "structure"
[10] "array"              "matrix"             "signature"
[13] "ObjectsWithPackage" "mts"                "ordered"
[16] "namedList"          "listOfMethods"

Martin

> getSubClasses <- function(superClass)
> return(setdiff(getClasses(.GlobalEnv), superClass)) wíll only work if
> the global enviroment isn;t filled with other class definitions.
> 
> I've seen functions that somewhat resemble it, but are not quite the
> same. Thanks in advance!
> 
> Cheers!! Albert-Jan
> 
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-- 
Martin Morgan
Computational Biology / Fred Hutchinson Cancer Research Center
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