On 29 April 2014 20:35, David Herman <[email protected]> wrote: > On Apr 29, 2014, at 12:40 AM, Andy Wingo <[email protected]> wrote: >> Indeed I expect that in >> practice most iterators in an ES6 program will be map, set, and array >> iterators, which in practice will not be implemented with generators. > > I strongly disagree with this. Generators will by far be the most convenient > and common way to implement iterators, regardless of their data source.
Yes, but Andy was talking about VM-provided iterators, where convenience of implementation does not matter. It is safe to assume that for all VMs a generator-based implementation will be substantially more expensive than a hand-written one (and will remain so in the foreseeable future, I'm pretty sure of that -- e.g. inlining is tricky for generators). So VM implementers won't use generators internally. /Andreas _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
