On Wed, Dec 12, 2012 at 10:18 AM, Allen Wirfs-Brock <[email protected]>wrote:
> > On Dec 12, 2012, at 10:05 AM, Brandon Benvie wrote: > > All the Object functions that operate on multiple properties are currently > specified using *pendingException* which reports the first thrown > exception after going through all the properties. defineProperties, freeze, > etc. > > > In, ES6. This is a breaking (hopefully nothing) change from ES5 that was > suggested by Mark Miller. > > The desire is to decrease the non-determinism that an early throw > introduces. > How can multiple calls to Object.mixin with identical state result in different results? > In the ES6 approach all property updates that can occur will occur, before > the exception is thrown instead of leaving the object in a less well > defined partially updated state. > If an exception is thrown because of an error in Object.mixin, what state is the object in? Will the spec define that state? jjb
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