How to create a Uuid with static lifetime?

Question

I want to have a static Uuid in my Rust program but I am unable to figure out how to do it.

I tried this but it does not work

fn type_id() -> &'static uuid::Uuid {
    let tmp = "9cb4cf49-5c3d-4647-83b0-8f3515da7be1".as_bytes();
    let tmp = uuid::Uuid::from_slice(tmp).unwrap();
    &tmp
}

error: cannot return reference to local variable `tmp`
returns a reference to data owned by the current function (rustc E0515)

Answer 1

Thanks @PitaJ. Using once_cell:Lazy works. I am still curious to know if there is a simpler way of doing this so I won't mark the answer as accepted yet.

static TYPE_ID: Lazy<uuid::Uuid> = Lazy::new(|| {
    let tmp = "9cb4cf49-5c3d-4647-83b0-8f3515da7be1";
    let tmp = uuid::Uuid::from_str(tmp).unwrap();
    tmp
});