Iterators are objects that produce sequences of values, so they can be iterated or looped over. Or, in other words, every time you ended up using a for loop in your program, you were most likely interacting with some kind of iterator.

Hello, folks! your wait is over, we have come up with a new blog. In this blog, we will discuss Iterators to process of series of items and its use cases in Rust programming language with the help of a sample example. I hope you will enjoy the blog.

Iterators:

An Iterators is responsible for the logic of iterating over each item and determining when the sequence has finished. When you use iterators, you don’t have to re-implement that logic yourself.

In Rust, iterators are lazy, meaning they have no effect until you call methods that consume the iterator to use it up.

Lets creates an iterator over the items in the vector vector by calling the iter method defined on Vec<T>.

fn main() {
    let vector = vec![1, 2, 3];

    let vector_iter = vector.iter();
}

Once we’ve created an iterator, we can use it in a variety of ways. like in for loop to execute some code on each item.

For example:

fn main() {
    let vector = vec![1, 2, 3];

    let vector_iter = vector.iter();

    for val in vector_iter {
        println!("value form the vector: {}", val);
    }
}

#rust #iterators #rust programming language