Question

How to filter a vector in Rust

Answer 1

fn main() {
    let numbers = vec![1, 2, 3, 4, 5, 6];

    let even_squares: Vec<i32> = numbers
        .into_iter()
        .filter_map(|x| {
            if x % 2 == 0 {
                Some(x * x) // Map even numbers to their squares
            } else {
                None // Filter out odd numbers
            }
        })
        .collect();

    println!("{:?}", even_squares); 
}


    
/*
run:

[4, 16, 36]
   
*/

 

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