Async Streams

Use async streams for asynchronous iteration.

Difficulty

Advanced

Code

use tokio_stream::StreamExt;
use tokio::time::{interval, Duration};

#[tokio::main]
async fn main() {
    let mut stream = tokio_stream::iter(vec![1, 2, 3, 4, 5])
        .map(|x| x * 2)
        .filter(|x| *x > 4);

    while let Some(value) = stream.next().await {
        println!("value: {}", value);
    }
}

Explanation

This example demonstrates how to use async streams in Rust. Read the code carefully to understand the flow. Pay attention to where values are created, borrowed, moved, or consumed.

Key Concepts

• Rust's strong type system catches errors at compile time
• Ownership and borrowing rules ensure memory safety
• Pattern matching makes code expressive and exhaustive

Related Topics

Browse more examples in the async category to build a complete understanding of this topic.