CODEWITHSUNDEEP
rustrust-warp
carloabelli
carloabelli

Reputation: 4349

How can I create a variable path in Warp?

I'm trying to have a variable path in Warp. I have tried this:

use uuid::Uuid;
use warp::{self, Filter};

fn main() {
    let uuid = Uuid::new_v4();

    println!("{}", uuid);

    let hello = warp::path(&uuid.to_string()).map(|| "hello world");

    warp::serve(hello).run(([127, 0, 0, 1], 8080));
}

but I get the error:

error[E0716]: temporary value dropped while borrowed
 --> src/main.rs:9:29
  |
9 |     let hello = warp::path(&uuid.to_string()).map(|| "hello world");
  |                 ------------^^^^^^^^^^^^^^^^-                      - temporary value is freed at the end of this statement
  |                 |           |
  |                 |           creates a temporary which is freed while still in use
  |                 argument requires that borrow lasts for `'static`

What is the best way to have the path parameter have a 'static lifetime?

Upvotes: 2

Views: 768

Answers (1)

Manu
Manu

Reputation: 74

You can get a static string from an allocated one by leaking it.

let uuid_str = Box::leak(uuid.to_string().into_boxed_str());
let hello = warp::path(uuid_str).map(|| "hello world");

Upvotes: 2

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