Accessing Dictionary Values in Rust in Rust

In Rust, you access values in a HashMap using square bracket notation or get():

use std::collections::HashMap;

let mut scores = HashMap::new();
scores.insert("Alice", 95);
scores.insert("Bob", 87);

let alice_score = scores["Alice"];  // 95
let bob_score = scores["Bob"];      // 87

Note: scores["key"] panics if the key doesn't exist. Use get() to get an Option instead, or contains_key() to check existence:

if scores.contains_key("Alice") {
    println!("{}", scores["Alice"]);
}