Splitting a UTF-8 string into chunks

Question

I want to split a UTF-8 string into chunks of equal size. I came up with a solution that does exactly that. Now I want to simplify it removing the first collect call if possible. Is there a way to do it?

fn main() {
    let strings = "ĄĆĘŁŃÓŚĆŹŻ"
        .chars()
        .collect::<Vec<char>>()
        .chunks(3)
        .map(|chunk| chunk.iter().collect::<String>())
        .collect::<Vec<String>>();
    println!("{:?}", strings);
}

Playground link

Answer 1

You can use chunks() from Itertools.

use itertools::Itertools; // 0.10.1

fn main() {
    let strings = "ĄĆĘŁŃÓŚĆŹŻ"
        .chars()
        .chunks(3)
        .into_iter()
        .map(|chunk| chunk.collect::<String>())
        .collect::<Vec<String>>();
    println!("{:?}", strings);
}