What is "r#" in Rust?

Question

This page in the guide for rocket has a piece of code as follows:

use rocket::form::Form;

#[derive(FromForm)]
struct Task<'r> {
    complete: bool,
    r#type: &'r str,
}

#[post("/todo", data = "<task>")]
fn new(task: Form<Task<'_>>) { /* .. */ }

What is the r# in the struct Task?

I know what a raw string literal is in Rust, which begins with r and is immediately bracketed by an arbitrary number of #. It seems however in the above snippet of code there is no closing #.

Answer 1

It allows you to escape the reserved word type and use it as a field of the struct. You can find more about 'raw identifiers' here.