Macro tuple 

macro_rules! tuple {
    ($($t:tt)*) => { ... };
}

Generate a tuple from a list of expressions.

Syntax

tuple!( [ Expr1 [; Count], Expr2 [; Count], ... ] )

[ and ] only indicate the optional content but not that they need to be input.

Similarly, ... indicates several repeated segments, rather than inputting ....

Examples

use tuplez::{tuple, Unit};

let tup = tuple!(1, "hello", 3.14);
let tup2 = tuple!("world", 2;3, 9.8);   // Repeat `2` three times
assert_eq!(tup2, tuple!("world", 2, 2, 2, 9.8));

let unit = tuple!();
assert_eq!(unit, Unit);

Remember that the tuple! macro does not directly evaluate expressions, so:

use tuplez::tuple;

let mut x = 0;
assert_eq!(tuple!({x += 1; x}; 3), tuple!(1, 2, 3));