Subj : How to distinguish objects of the same type in C?
To   : netscape.public.mozilla.jseng
From : Weiyang Zhou
Date : Thu Aug 11 2005 01:42 am

Hi,

If I use JS_initClass to define a class Foo, the contructor will allocate 
some instance data in C for the object created. I also use JS_DefineFunction 
to define a function called fooOp(). Assuming the C implementation of this 
function is fooOp_native().

With the following JavaScript:

f1 = new Foo();
f2 = new Foo();

fooOp(f1, f2);

In fooOp_native(), I will need to retrieve the instance data from each 
object. How should I do that?

I have read jsdate.c, seems it uses OBJ_SET_SLOT/OBJ_GET_SLOT, but it is not 
in jsapi.h. Or should I use JS_SetPrivate/JS_GetPrivate?

Thank you
Weiyang

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