Rust: Filter Range, Map, Collect

filter_map_collect.rs

fn main() {
  let rng = 0..30;
  let rng_even_cubed = rng.filter(|n| is_even(*n))
                          .map(|n| n * n * n)
                          .collect::<Vec<i32>>();
  println!("{:?}", rng_even_cubed);
}

fn is_even(n: i32) -> bool {
  n % 2 == 0
}

[0, 8, 64, 216, 512, 1000, 1728, 2744, 4096, 5832, 8000, 10648, 13824, 17576, 21952]