On Nov 10, 2011, at 1:26 AM, Tom Van Cutsem wrote: > > Are you sure you want to kill [[HasProperty]] entirely? If we replace it by a > conditional [[Get]], wouldn't that mean that the expression |name in obj| > might unnecessarily trigger an accessor in obj? >
Good point, I didn't think about the fact that [[Get]] always triggers accessor calls. We probably do need to continue to have a side-effect free [[HasProperty]]. I still think it is desirable to have a conditional [[Get]] available for use in places like the array algorithms. Whether it is an over-roading of the [[Get]] api or an additional trap is debatable. Allen _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
