iff 0.1.0

A macro for if / if let chains until [RFC 2497] is implemented.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

use iff::iff;

fn go(var: Option<Vec<i32>>) {
    print!("{:?}", var);
    iff! {
        let Some(x) = var,
        let [y, _] = &*x,
        *y == 0 => {
            print!(" => ok")
        }
    }
    println!("");
}

fn main() {
    go(None);
    go(Some(vec![]));
    go(Some(vec![0]));
    go(Some(vec![0, 1]));
    go(Some(vec![0, 1, 2]));
}