I've done this by accident before and it works, but causes trouble down the line (IIRC saving and loading objects causes problems).

On Mar 21, 2005, at 10:22 PM, Vadim Ogranovich wrote:

Hi,

It seems that R_do_slot_assign can change the type of an S4 class slot.
For example I have a class

setClass("ostream", representation(id = "integer", keepOpen =
"logical"))

and inside a C-function I was able to assign a RAW vector to the id
slot. Is this intentional? I remember reading somewhere that the slot
type is guaranteed by R. Maybe this doesn't extend to C code?


Now, in the above example I actually don't know the eventual type of the
'id' slot, it will be set up in some C code that intializes the class
instance. What is the right way to define the representation in such a
case?


Thanks,
Vadim

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Byron Ellis ([EMAIL PROTECTED])
"Oook" -- The Librarian

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