Unity Coroutine

Let's say that you want to run some asynchronous task after a timer of some sort, then the StartCoroutine method is your friend, with a very set it and forget it approach.

    // Start is called before the first frame update

    void Start()

    {

        StartCoroutine("doSomethingAfter3seconds");

        StartCoroutine("doSomethingAfter5seconds", "Say hi");

    }

     IEnumerator doSomethingAfter3seconds(){

        yield return new WaitForSeconds(3);

        Debug.Log("it's been 3 seconds");

    }

      IEnumerator doSomethingAfter5seconds(object value){

        yield return new WaitForSeconds(5);

        Debug.Log($"it's been 5 seconds, {value}");

    }

And that's all there is to it, there's also controller function. that will let you stop your coroutine or stop all coroutines.

StopCoroutine("doSomethingAfter3seconds");

StopAllCoroutines();