#009 Feb 15, 2022

9. Inspecting iterator

Ever wondered how to print while iterating?

Use inspect.

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let cars = vec!["Skoda", "Ferrari", "Ford"];

let car_lenghts: Vec<u32> = cars
    .iter()
    .enumerate()
    .inspect(|(idx, s)| println!("{idx} - {s}"))
    .map(|(_, name)| name.len() as u32)
    .collect();

assert!( car_lenghts == vec![5,7,4

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