How do I write asynchronous code in different programming languages?

How do I write asynchronous code in JavaScript?

In JavaScript, you can use the async and await keywords. Here's a simple example:

async function fetchData() {
    const response = await fetch('https://api.example.com/data');
    const data = await response.json();
    return data;
}

What about in Python?

In Python, you can use the asyncio library. Here's a basic example:

import asyncio

async def fetch_data():
    await asyncio.sleep(1)  # Simulate a network call
    return 'Data fetched'

asyncio.run(fetch_data())

Can you show me how to do it in C#?

Sure! In C#, you can use the async and await keywords as well. Here's an example:

public async Task<string> FetchDataAsync() {
    using (HttpClient client = new HttpClient()) {
        var response = await client.GetStringAsync("https://api.example.com/data");
        return response;
    }
}

What about in Go?

In Go, you can use goroutines for asynchronous programming. Here's a simple example:

package main

import (
    "fmt"
    "time"
)

func fetchData(ch chan string) {
    time.Sleep(1 * time.Second) // Simulate a network call
    ch <- "Data fetched"
}

func main() {
    ch := make(chan string)
    go fetchData(ch)
    fmt.Println(<-ch)
}