As currently specified, they are to be enumerated by for-in. This is intentional and I believe we discussed it at some past TC-39 meeting. If we are treating the string characters as indexible readonly properties then for-in-ing over them seems like a perfectly reasonable thing to do. This is one of the advantages of using [[GetOwnProperty]] in this manner rather than trying to support direct string indexing using some other specification mechanism -- they just naturally integrate into property access anywhere it occurs in the specification.
>-----Original Message----- >From: [email protected] [mailto:es5-discuss- >[email protected]] On Behalf Of Mark S. Miller ... > >15.5.5.2 [[GetOwnProperty]] ( P ) > >> 9. Return a Property Descriptor { [[Value]]: resultStr, >[[Enumerable]]: true, [[Writable]]: false, [[Configurable]]: false } > >Since these numeric pseudo-properties are not enumerated by for-in >loops, we should describe them as non-enumerable. > _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
