What are some examples of Kotlin coroutines?

Can you give me some examples of how to use Kotlin coroutines?

Sure! Kotlin coroutines are used for asynchronous programming. For example, you can use launch to start a coroutine.

What does the launch function do?

The launch function starts a new coroutine without blocking the current thread. It returns a Job object.

Can you show me a simple code example?

Absolutely! Here's a simple example:

import kotlinx.coroutines.*

fun main() = runBlocking {
    launch {
        delay(1000L)
        println("World!")
    }
    println("Hello,")
}

This will print "Hello," and then after a second, "World!".

What about using async instead of launch?

Using async allows you to return a result from the coroutine. It returns a Deferred object that you can await.