Asynchronous Programming Development Tutorials, Guides & Insights

Combine multiple coroutines to run concurrently:

import asyncio

async def task(name, duration):
    print(f"Task {name} started.")
    await asyncio.sleep(duration)
    print(f"Task {name} finished after {duration} seconds.")

async def main():
    await asyncio.gather(
        task("A", 2),
        task("B", 1),
        task("C", 3),
    )

asyncio.run(main())
# Output: Tasks A, B, and C execute concurrently.

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Libraries like Immutable.js or Immer provide utilities to enforce immutability in your state management.

  import produce from 'immer';

  const state = {
      count: 0,
      items: []
  };

  const newState = produce(state, draft => {
      draft.count += 1;
      draft.items.push('new item');
  });

  console.log(state); // Original state remains unchanged
  console.log(newState); // New state with modifications

Synchronous Example:

console.log("Start");
console.log("This runs after the first line");
console.log("End");

async fn fetch_and_process_data(url: &str) -> Result<usize, reqwest::Error> {
    let data = fetch_data(url).await?;
    Ok(data.len())
}

• Error handling in async functions works similarly to synchronous functions.
• The ? operator can be used to propagate errors within an async context.