[REBOL] Re: objects without overhead
From: rsnell:webtrends at: 19-Oct-2000 9:27
Ole,
I believe you are thinking the same way I did which is incorrect.
The functions are duplicated as evidenced by a response that Elan
sent about this very question a few weeks back. Here it is:
------- from [rebol--techscribe--com] ------
Hi Rodney,
I believe REBOL makes a new copy of functions for each derived object.
Let me introduce the players: A root object o, a function f, and a derived
object p:
>> o: make object! [f: func [] [print "a"] ]
>> p: make o []
At this point the two objects are look-alikes:
>> probe o
make object! [
f: func [][print "a"]
]
>> probe p
make object! [
f: func [][print "a"]
]
Let us replace the string "a" by the string "b" in p's function f
>> change at second get in p 'f 2 "b"
== []
Were we successful?
>> probe p
make object! [
f: func [][print "b"]
]
Yes. Was the function f in the parent object o also modified?
>> probe o
make object! [
f: func [][print "a"]
]
No!
Apparently modifications to the inherited function f in p do not propagate
to the f function in the parent object o, ergo the two functions are
independent of each other.
------- end ----------
Rodney
