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re: Javascript Array.push is 945x faster than Array.concat 🤯🤔 VIEW POST

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What about:

cont newArr = [...oldArr, newItem]

🤔

 

Doesn't that still create a copy of the first array - which makes it the same as the concat?

 

I don't know actually. If so, that's really insightful thank you, I'll investigate!!

 

I tried this out in the babel repl, the spread uses concat after es6 code gets transpiled so I can assume its probably the same :O

babeljs.io/repl/#?babili=false&bro...

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