rustHow to use an async generator in Rust?

Async generators in Rust are a way to create an asynchronous iterator. They are created using the async move keyword and the yield keyword.

Example code

async fn my_async_generator() -> impl Stream<Item = i32> {
    let mut i = 0;
    loop {
        yield i;
        i += 1;
    }
}

Output example

0
1
2
3
...

Code explanation

• async fn: This is used to declare an asynchronous function.
• impl Stream<Item = i32>: This is used to specify the type of the stream that will be returned.
• let mut i = 0: This is used to declare a mutable variable that will be used to store the current value of the iterator.
• loop: This is used to create an infinite loop that will be used to generate the values of the iterator.
• yield i: This is used to yield the current value of the iterator.
• i += 1: This is used to increment the current value of the iterator.

Helpful links

• Async Generators in Rust
• Async Generators in Rust Tutorial

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