You are right, I've realized it after posting ... `Object.assign(target, source)` via `Get` and `Put` is basically the equivalent of a classic `for/in` with `hasOwnProperty` check ... well, once again, in ES6 `Object.getOwnPropertyDescriptors(O)` seems to be a solution for other cases too (shallow copy of properties, shallow clone, not just for/in) plus yes, `Object.mixin(target, source)` might be simplified as well via this proposal, that's a good point ... so 3 problems solved at once! :-)
On Tue, Mar 4, 2014 at 4:02 PM, Claude Pache <[email protected]> wrote: > > > Le 5 mars 2014 à 00:18, Andrea Giammarchi <[email protected]> a > écrit : > > > Also please note that this proposal simplifies [Object.assign(target, > source)]( > https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign) > too since latter one is basically: > > ```javascript > Object.defineProperties( > target, > Object.getOwnPropertyDescriptors(source) > ); > ``` > > > No. `Object.assign` (1) uses the semantics of the assignment operator `=` > (for example, it makes a difference in case of setters), and (2) copies > only enumerable properties. Did you think about `Object.mixin`? > > --Claude >
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