Creating a sliding window iterator of slices of chars from a String

Question

I am looking for the best way to go from String to Windows using the windows function provided for slices.

I understa

Answer 1

You can use itertools to walk over windows of any iterator, up to a width of 4:

extern crate itertools; // 0.7.8

use itertools::Itertools;

fn main() {
    let input = "日本語";

    for (a, b) in input.chars().tuple_windows() {
        println!("{}, {}", a, b);
    }
}

See also:

• Are there equivalents to slice::chunks/windows for iterators to loop over pairs, triplets etc?