Function any

pub fn any() -> impl Filter + Copy

A Filter that matches any route.

This can be a useful building block to build new filters from, since Filter is otherwise a sealed trait.

Example

use warp::Filter;

let route = warp::any()
    .map(|| {
        "I always return this string!"
    });

This could allow creating a single impl Filter returning a specific reply, that can then be used as the end of several different filter chains.

Another use case is turning some clone-able resource into a Filter, thus allowing to easily and it together with others.

use std::sync::Arc;
use warp::Filter;

let state = Arc::new(vec![33, 41]);
let with_state = warp::any().map(move || state.clone());

// Now we could `and` with any other filter:

let route = warp::path::param()
    .and(with_state)
    .map(|param_id: u32, db: Arc<Vec<u32>>| {
        db.contains(&param_id)
    });