Trait Get 

pub trait Get<T, I>: HList
where
    I: Index,
{
    // Required methods
    fn get(&self) -> &T;
    fn get_mut(&mut self) -> &mut T;
}

Retrieve element of the heterogenous list by type.

Required Methods

fn get(&self) -> &T

Retrieves a reference to the element of the heterogenous list by type.

Examples

use hlist2::{hlist, ops::Get};

let list = hlist![0_i32, 1_i64];
let a: i64 = *list.get();
assert_eq!(a, 1);

fn get_mut(&mut self) -> &mut T

Retrieves a mutable reference to the element of the heterogenous list by type.

Examples

use hlist2::{hlist, ops::Get};

let mut list = hlist![0_i32, 1_i64];
*list.get_mut() = 5_i32;
let a: i32 = *list.get();
assert_eq!(a, 5);

Implementors

impl<Head, Tail> Get<Head, Here> for Cons<Head, Tail>

where Tail: HList + ?Sized,

Desired type is located in the head of the heterogenous list.

impl<Head, Tail, FromTail, TailIndex> Get<FromTail, There<TailIndex>> for Cons<Head, Tail>

where Tail: Get<FromTail, TailIndex> + ?Sized, TailIndex: Index,

Desired type is located somewhere in the tail of the heterogenous list.