What are coroutines and how do they work in different programming languages?

What are coroutines and how do they work in different programming languages?

Coroutines are a general control structure that allow execution to be paused and resumed. They are used in languages like Python, JavaScript, and Kotlin to handle asynchronous programming.

Can you explain how coroutines work in Python?

In Python, coroutines are defined using the async def syntax. You can use await to pause the coroutine until the awaited task is complete, allowing other tasks to run in the meantime.

How do coroutines differ in JavaScript?

In JavaScript, coroutines are often implemented using async and await as well. They allow for non-blocking code execution, making it easier to work with promises and asynchronous operations.

What about Kotlin? Are there any unique features?

Kotlin's coroutines are built into the language and provide structured concurrency. They allow for easy cancellation and can be used with various builders like launch and async for concurrent tasks.