rustRust map example

A map in Rust is a collection of key-value pairs, where each key is unique. It is implemented as a HashMap, which is a hash table where the keys are hashed and stored in buckets.

Example code

use std::collections::HashMap;

let mut map = HashMap::new();

map.insert("key1", "value1");
map.insert("key2", "value2");

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

Output example

{"key1": "value1", "key2": "value2"}

Code explanation

• use std::collections::HashMap;: imports the HashMap type from the std::collections module.
• let mut map = HashMap::new();: creates a new empty HashMap and stores it in the map variable.
• map.insert("key1", "value1");: inserts a key-value pair into the map.
• println!("{:?}", map);: prints the contents of the map to the console.

Helpful links

• Rust HashMap documentation

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