rustHow to use a borrowed key in a Rust HashMap?

Using a borrowed key in a Rust HashMap is easy.

use std::collections::HashMap;

let mut map = HashMap::new();

let key = "key";
let value = "value";

map.insert(key, value);

let borrowed_key = &key;
let borrowed_value = map.get(borrowed_key);

println!("{:?}", borrowed_value);

Output example

Some("value")

1. let mut map = HashMap::new(); - Create a new empty HashMap.
2. let key = "key"; let value = "value"; - Create a key and value to insert into the HashMap.
3. map.insert(key, value); - Insert the key and value into the HashMap.
4. let borrowed_key = &key; - Create a borrowed reference to the key.
5. let borrowed_value = map.get(borrowed_key); - Get the value from the HashMap using the borrowed key.
6. println!("{:?}", borrowed_value); - Print the value.

Helpful links

• Rust HashMap Documentation

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