WAG

Go like sync.WaitGroup implementation in Rust. (sync/async)

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toml wag = "0.3.0"

How to use,

```rust use wag::WaitGroup;

let wg = WaitGroup::new(); ```

```rust for _ in 0..10 { let w = wg.add();

thread::spawn(move || {
    // ...
    w.done();
});

}); wg.wait(); // or wg.async_wait().await; ```

```rust for w in wg.adds::<10>() {

thread::spawn(move || {
    // ...
    w.done();
});

}); wg.wait(); // or wg.async_wait().await; ```

```rust let [w1, w2, w3] = wg.adds();

thread::spawn(move || { // ... w1.done(); });

thread::spawn(move || { // ... w2.done(); });

thread::spawn(move || { // ... w3.done(); });

wg.wait(); // or wg.async_wait().await; ```

```rust wg.addsiter::<10>().enumerate().foreach(|(i, w)| {

thread::spawn(move || {
    // ... with i
    w.done();
});

}); wg.wait(); // or wg.async_wait().await; ```