Crate tuple

Examples

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.));

Adding a Trait

#[macro_use]
extern crate tuple;
use tuple::*;
use std::ops::{Add, Sub, Mul, Div};
use std::fmt::Debug;

trait Ring: Add + Sub + Mul + Div + Debug + Sized {}

// The name is up to you
macro_rules! impl_ring {
    // This line is defined by this crate and can't be changed
    ($($Tuple:ident { $($idx:tt -> $T:ident),* } )*) => ($(
    
    // This is expanded for every Tuple type
        impl<$($T),*> Ring for $Tuple<$($T),*> where $( $T: Ring + 'static ),* {}
    
    // this has to match again
    )*)
}

// actually implement it!
impl_tuple!(impl_ring);

Macros

impl_tuple

Structs

T1
T2
T3
T4
T5
T6
T7
T8