I didn't know about structured clone so I looked it up. It looks pretty promising. As for checking if two things are equal, maybe it makes sense for objects to define their own `.equals(other)` methods.
https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm On Mon, Nov 14, 2016 at 9:31 PM, Eric Devine <devin...@gmail.com> wrote: > 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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