Tutorial by Examples: coroutine

Before Python 3.5+ was released, the asyncio module used generators to mimic asynchronous calls and thus had a different syntax than the current Python 3.5 release. Python 3.x3.5 Python 3.5 introduced the async and await keywords. Note the lack of parentheses around the await func() call. import ...
Generators can be used to implement coroutines: # create and advance generator to the first yield def coroutine(func): def start(*args,**kwargs): cr = func(*args,**kwargs) next(cr) return cr return start # example coroutine @coroutine def adder(sum = 0): ...
All functions to interact with coroutines are avaliable in the coroutine table. A new coroutine is created by using the coroutine.create function with a single argument: a function with the code to be executed: thread1 = coroutine.create(function() print("honk") end)...
First it's essential to understand that, game engines (such as Unity) work on a "frame based" paradigm. Code is executed during every frame. That includes Unity's own code, and your code. When thinking about frames, it's important to understand that there is absolutely no guarantee of w...
Often you design coroutines to naturally end when certain goals are met. IEnumerator TickFiveSeconds() { var wait = new WaitForSeconds(1f); int counter = 1; while(counter < 5) { Debug.Log("Tick"); counter++; yield return wait; } ...
There are three MonoBehaviour methods that can be made coroutines. Start() OnBecameVisible() OnLevelWasLoaded() This can be used to create, for example, scripts that execute only when the object is visible to a camera. using UnityEngine; using System.Collections; public class RotateObje...
Usage If you have a long running operation that relies on the not-thread-safe Unity API, use Coroutines to split it over multiple frames and keep your application responsive. Coroutines also help performing expensive actions every nth frame instead of running that action each frame. Splitting Lon...
Coroutines can yield inside themselves, and wait for other coroutines. So, you can chain sequences - "one after the other". This is very easy, and is a basic, core, technique in Unity. It's absolutely natural in games that certain things have to happen "in order". Almost every...
const promiseReturningFunction = Promise.coroutine(function* (file) { const data = yield fs.readFileAsync(file) // this returns a Promise and resolves to the file contents return data.toString().toUpperCase() }) promiseReturningFunction('file.txt').then(console.log)
(from official doc) fun main(args: Array<String>) { launch(CommonPool) { // create new coroutine in common thread pool delay(1000L) // non-blocking delay for 1 second (default time unit is ms) println("World!") // print after delay } println("He...

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