## Functools Collection of functional utilities for Rust. ```rust let xs = vec![1, 2, 3]; let ys = vec![4, 5, 6]; assert_eq!(vector::zip_with(xs, ys, |x, y| x + y), vec![5, 7, 9]); ``` ```rust let xs = vec![1, 3, 5, 7, 9]; let is_odd = |x| x % 2 != 0; assert_eq!(truth::all(&xs, is_odd), true) ``` Async pipe. Instead of: ```rust let x = f(1).await; let y = g(x).await; let z = h(y).await; ``` you can do: ```rust let x = pipe!(1 => f => g => h); ```