[REBOL] Re: Strange behaviour in Make object?
From: media:quazart at: 13-Nov-2001 9:10
this applies to ALL objects, not just view. Since view is object built, then
it follows the same rules as any other object...
I think I've understood what happens and it seems as if they store a
list. This is an array of offsets from the base object address
which in turn point to other areas in memory. each position is fixed in
order to make this system speedy. Especially since most
compilers/assemblers have instructions to calculate offset resolution in one
opcode (usually one machine instruction).
The amiga's library system is built almost exactly like this. It would be
consistent with Carl, and why change something that works well and fast!?
In rebol, I guess they build this vector list the first time the object is
defined and then just link to it everytime. Then, when a new object is
cloned and the template changes, I guess they just allocate a new vector
list with new fields APPENDED... this would make any cloned objects
completely safe to use with "parent" objects
this also looks like the Amiga library system which had two modes... the
first one returned the same data segement everytime and thus all
applications SHARED the same data, and another one where every call to open
library returned a NEW data segment but with the same vector jumplist...
this second mode looks almost like a direct translation to rebol objects...
AS usual, these are just my observations... not explicit RT answers...
hope this makes sense to all...