Macro HList 

macro_rules! HList {
    () => { ... };
    ($head:ty $(,)?) => { ... };
    ($head:ty, $($tail:ty),* $(,)?) => { ... };
}

Macro creating heterogenous list types from list of element types.

This macro supports trailing comma at the end of list of element types.

Examples

This macro can be used to name heterogenous list type as easily as tuple type without cons-nil boilerplate:

use hlist2::{hlist, HList, Cons, Nil};

let list: HList![i32, f64, bool] = hlist![1, 2.0, true];
let list: Cons<i32, Cons<f64, Cons<bool, Nil>>> = list;