extern crate rayon; // 1.0.2

use rayon::prelude::*;

fn main() {
    let numbers: Vec<_> = "12.03 0.3 44.2 45 zzz".split_whitespace().collect();

    let x = numbers
        .par_iter()
        .map(|n| n.parse::<f32>())
        .filter_map(|n| n.ok());

    x.for_each(|n| println!("{:?}", n));
}