Introduction to Closures in Rust

Closures are a powerful feature in Rust that allow you to capture variables from the surrounding scope and create anonymous functions. They are particularly useful for functional programming styles and can enhance code readability and maintainability. In this article, we will explore three diverse examples of using closures in Rust, showcasing their practical applications.

Example 1: Filtering a Vector with a Closure

Use Case

In this example, we’ll demonstrate how to use a closure to filter elements from a vector based on a specific condition. This is a common operation when dealing with collections in Rust.

```rust
fn main() {
let numbers = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let even_numbers: Vec = numbers.into_iter().filter(|&x| x % 2 == 0).collect();
println!("Even numbers: {:?}