rust vec length

In Rust, the Vec type represents a dynamically sized, growable array. You can obtain the length of a Vec by calling its len method. This method returns the number of elements currently stored in the Vec. Here's an example:

let my_vec = vec![1, 2, 3, 4, 5];
let length = my_vec.len();
println!("Length of my_vec: {}", length);

In this example, my_vec is a Vec containing five elements. The len method is called on my_vec to retrieve its length, which is then printed to the console.

Output:

Length of my_vec: 5

You can use the len method to perform various operations based on the length of a Vec, such as iterating over its elements or checking if it is empty.