enjoin 0.1.0

Powerful syntax-level async join macro
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

# enjoin

**enjoin**'s async join macros operate at the syntax level. It allows you to...

### `break`, `continue`, and `return` out of async code running in a join
```rust
for _ in 0..10 {
    enjoin::join!(
        {
            if do_thing_1().await {
                break;
            }
        },
        {
            if do_thing_2().await {
                continue;
            }
        }
    );
}
```
### Use `?` (try operator) in a join
```rust
async fn fetch_and_save_both() -> Result<(), Box<dyn Error>> {
    enjoin::join!(
        {
            let data = fetch_data_1().await?;
            save_data(data).await?;
        },
        {
            let data = fetch_data_2().await?;
            save_data(data).await?;
        }
    );
}
```
### Share mutable borrows accross a join
... as long as the mutable borrows don't last across yield point / await point.
```rust
let mut count = 0;
enjoin::join_auto_borrow!(
    {
        loop {
            incr_signal.next().await;
            count += 1;
        }
    },
    {
        loop {
            decr_signal.next().await;
            count -= 1;
        }
    }
);
```