How about beginning with the HTML structured clone algorithm, and a `Symbol.clone` property to allow an object to optionally define it's own cloning behavior?
On Mon, Nov 14, 2016 at 9:02 PM, Isiah Meadows <isiahmead...@gmail.com> wrote: > I agree. Also, consider iterables. Should their `Symbol.iterator` method > be called? There's no obvious behavior for the details, and people's > opinions differ on what should be correct. > > On Mon, Nov 14, 2016, 20:58 Frankie Bagnardi <f.bagna...@gmail.com> wrote: > > It's pretty hard to decide how these behave, specifically with custom > classes. Focusing on Object.clone... > > - with classes do you call the constructor, and with what arguments? > - HTMLElement and sub classes can't be constructed directly, what happens > with them? > - do you copy internal properties? this would make it hard to polyfill > - how does it behave with getters and setters? > - with regular expressions do you copy the lastIndex? > > Most of those apply to Object.equals also. > > > > On Mon, Nov 14, 2016 at 6:25 PM, Kevin Barabash <kev...@khanacademy.org> > wrote: > > It would be nice if deep equality checking and deep cloning of objects was > included in the standard library. Has there been any proposals around > including these in the past? > > – Kevin > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > >
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