rustHow to create a HashSet from a Vec in Rust?

Creating a HashSet from a Vec in Rust is easy and can be done with the collect method.

let vec = vec![1, 2, 3];
let set: HashSet<i32> = vec.into_iter().collect();

The output of the above code will be a HashSet containing the elements of the Vec:

{1, 2, 3}

The code works by taking the elements of the Vec and collecting them into a HashSet. The collect method takes an iterator and collects its elements into a collection.

Helpful links

• Rust Docs - Collect

Edit this code on GitHub