问题描述
对此线程的评论之一:，说:
One of the comments on this thread: Checking condition and calling continuous method with periods of delay unity, said that:
我的问题是，这为什么?这只是在Unity中还是一般而言?Unity的官方虚拟现实示例 https://www.assetstore.unity3d.com/zh_cn/#！/content/51519 非常频繁地使用它们(尤其是传单示例)，而不是Invoke或Invoke Repeating，这些示例项目也在最近发布.
My question is, why is this? Is this just in Unity or in general? Unity's official virtual reality samples https://www.assetstore.unity3d.com/en/#!/content/51519 use them very heavily (especially the flyer example) instead of Invoke or Invoke Repeating, these sample projects were released recently as well.
推荐答案
尽管建议适用于任何地方，但这在很大程度上是Unity的事情.
This is very much a Unity thing, though the advice is applicable anywhere.
开发人员不希望迭代 IEnumerable 来更改程序的状态.这不是 IEnumerable 的用途，并且与.NET的所有行为都不一致.
Developers do not expect iterating an IEnumerable to change a program's state. It's not what IEnumerable is intended for and is an inconsistent behavior with all of .NET.
Unity正在做的事情是使用 yield return 作为伪协程，这会使不熟悉它的开发人员感到困惑.
What Unity is doing is using yield return as a pseudo-coroutine, and it's going to cause confusion for any devs unfamiliar with that.
在现代C#中，我们需要异步/等待来完成Unity的意图，但是Unity是在该功能可用之前完成的.
In modern C# we have async/await to accomplish what Unity intended, but Unity was made before that feature was available.
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