Question

How to generate a UUID (Universally Unique Identifier) in Rust

Answer 1

use uuid::Uuid;

/*
    Generate a UUID v4 (random-based) in idiomatic Rust.

    - Uses the official `uuid` crate, which is the standard way to handle UUIDs.
    - UUID v4 is fully random and follows RFC 4122.
*/

/// Generate a UUID v4 and return it as a lowercase string.
fn generate_uuid_v4() -> String {
    let uuid = Uuid::new_v4();   // built-in v4 generator from the crate
    uuid.to_string().to_lowercase()
}

fn main() {
    let uuid = generate_uuid_v4();
    println!("Generated UUID v4: {}", uuid);
}



/*
run:

Generated UUID v4: 9d3f3fff-d531-4e89-a32f-8636dccf47d5

*/

 

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