What are some real-world examples of async iterators?

What are some real-world examples of async iterators?

Async iterators are used in various scenarios, such as streaming data from APIs, reading files, or handling events.

Can you give me a specific example of using async iterators with an API?

Sure! For instance, when fetching data from a paginated API, you can use an async iterator to handle each page of results as they come in.

How does that work in code?

Here's a simple example:

async function* fetchPages(url) {
    let page = 1;
    while (true) {
        const response = await fetch(`${url}?page=${page}`);
        const data = await response.json();
        if (data.length === 0) break;
        yield data;
        page++;
    }
}

This function will yield each page of results until there are no more pages.

That makes sense! Are there other use cases for async iterators?

Absolutely! They can also be used for reading large files line by line or processing streams of data in real-time.