perfect

great...it will not mutate the array

do you still the parameter if you dont need to use when using a arrow function ?

Coooool

Very cool ! ))

simply super

Same with me, gave the try reading https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions , but still can't nail it hehe 🤣.

Next time will be!

I couldn't understand this solution. How this code can get "true" values?

They are required if you have multiple arguments or no arguments, in this case, it wasn't required but he put it anyway.

I tried this myself but I couldn't make it work so its'nice to see a working example

What are the brackets supposed to do?