spread assignment not mutate, it reassign, like "+=" and other.
if (
('a = {...a,...b}'.length > 'a ...= b'.length) === ('n = n+1'.length > 'n += 1'.length)
) { console.log('why "addition assignment" is necessary, but "spread assignment" is not?'); }
25.04.2018, 18:21, "Isiah Meadows" <isiahmead...@gmail.com>:
Note: `Object.assign` mutates its first argument and (with only obscure caveats) does exactly this. Not sure syntax is necessary here.Oh, and arrays also have the common idiom `array.push(...values)` (but they could use an `Array.prototype.pushAll` to avoid polluting arguments lists).
On Wed, Apr 25, 2018, 09:24 Артём Арутюнян <arta...@ya.ru> wrote:I propose spread assignment operator:_______________________________________________var obj = { test1: 1 };var anotherObj = { test2: 2 };obj ...= { test2: 2 }; // == (obj = { ...obj, ...anotherObj })// { test1: 1, test2: 2 }I'm surprised it wasn't in the original implementation
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