Ok, i become convinced!! :-)
-----Mensaje original----- De: [email protected] [mailto:[email protected]] En nombre de Stephan Beal Enviado el: miércoles, 12 de mayo de 2010 16:25 Para: [email protected] Asunto: Re: [v8-users] a simple question about "args.This()->GetPointerFromInternalField" On Wed, May 12, 2010 at 3:28 PM, Seiji Sam Lee <[email protected]> wrote: > But I want to suggest a new property (like "Holder" or "This") called > "Owner", a reference to the object that own (in origin) the property. > > It could allow things like that: > > var echo=$out.puts > echo("Hello!!"); No, it couldn't because when you copy $out.puts to echo you are copying the function named puts and you are not copying any information about the $out object. That function has no notion of a parent/container/self object until it is called in the scope of a given "this" object. That is, a function handle contains no metadata which points back to its "original" owner (and that owner could change over time). Consider: $out = {x:1}; $in = {x:2}; function puts() { print(this.x); } $out.puts = puts; $in.puts = puts; // is equivalent to: $out.puts = $in.puts = puts; in that last statement, which object "should" be the Owner? It's not answerable for the generic case. -- ----- stephan beal http://wanderinghorse.net/home/stephan/ -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users
