Question

How to iterate over map keys and values in Rust

Answer 1

use std::collections::BTreeMap;

fn main() {
    let mut map = BTreeMap::new();
    
    map.insert("c", 1);
    map.insert("cpp", 2);
    map.insert("java", 3);
    map.insert("rust", 4);

    for (key, value) in &map {
        println!("Key:{k} Value:{v}", k = key, v = value);
    }
}




/*
run:

Key:c Value:1
Key:cpp Value:2
Key:java Value:3
Key:rust Value:4

*/

 

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