extern crate tuple;
use tuple::*;
let a = T2(3, 4) + T2(5, 4);
assert_eq!(a, T2(8, 8));
let b = T2(3u32, 4.0f32) * T2(7, 3.0);
assert_eq!(b, T2(21, 12.));
This is implemented in the TupleElements
trait.
Indexing works as expected and panics when out of bounds.
There are also get
and get_mut
functions that return Option<&T>
and Option<&mut T>
.
assert_eq!(T3(1, 2, 3)[2], 3);
assert_eq!(T2(7, 8).get(1), Some(&8));
assert_eq!(T2(7, 8).get(2), None);
#[macro_use]
extern crate tuple;
extern crate num_traits;
use tuple::*;
use num_traits::Zero;
use std::ops::{Add, Sub, Mul};
use std::fmt::Debug;
trait Ring: Add + Sub + Mul + Zero + Debug + Sized {}
macro_rules! impl_ring {
($($Tuple:ident { $($idx:tt -> $T:ident),* } )*) => ($(
impl<$($T),*> Ring for $Tuple<$($T),*> where Self: Zero, $( $T: Ring ),* {}
)*)
}
impl_tuple!(impl_ring);