Le 16/02/2013 23:31, Allen Wirfs-Brock a écrit :
Will this not just shift the current complexity someplace else?
Well, it means that for 100% backwards compatibility, Object.isFrozen
would have to be something like:
1. Let state = obj.[[GetIntegrity]]();
2 If state is "frozen" return true;
3 If state is "sealed" or "non-extensible", then return true if all
properties are non-configurable and non-writable
nit: You can save the state to "frozen" before returning true.
4 return false.
The real complexity saving is in simplifying the MOP/Proxy handler
interface and also in making Proxy invariants only sensitive to the
explicit integrity state of an object.
David
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