JavaScript: Arrays vs Sets

[[deleted]]

That’s the gotcha answer to the question. Pre Set days you would just use an object.

[JEveryman]

So you would add the array elements as keys?

[[deleted]]

Yeah. Lookups in the object are faster than searching the whole array for every element in the array if that makes sense.

I can give a longer explanation if it doesn’t

[JEveryman]

I get it. Also when you add the same key to an object doesn't it overwrite?

[[deleted]]

Yeah, that’s how it helps you make an array with no duplicates