How do JavaScript sets perform compared to arrays?

How do JavaScript sets perform compared to arrays?

JavaScript sets offer faster performance for certain operations like checking for existence, as they use a hash table under the hood.

What are the main differences in terms of memory usage?

Sets generally use more memory than arrays because they store unique values and maintain a hash table for quick lookups.

Can you give an example of when to use a set instead of an array?

Use a set when you need to ensure all values are unique, like tracking unique user IDs or managing a collection of distinct items.

Are there any performance benchmarks available for sets vs arrays?

Yes, benchmarks show that sets outperform arrays in operations like add, delete, and has, especially with larger datasets.