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