問題：
I am currently working on React JS and React Native frameworks.我目前正在研究React JS和React Native框架。 On the half way road I came across Immutability or the Immutable-JS library , when I was reading about Facebook's Flux and Redux implementation.在半路上，當我閱讀 Facebook 的 Flux 和 Redux 實現時，我遇到了 Immutability 或Immutable-JS 庫。
The question is, why is immutability so important?問題是，爲什麼不變性如此重要？ What is wrong in mutating objects?改變對象有什麼問題？ Doesn't it make things simple?這不是讓事情變得簡單嗎？
Giving an example, let us consider a simple News reader app with the opening screen being a list view of news headlines.舉個例子，讓我們考慮一個簡單的新聞閱讀器應用程序，它的打開屏幕是新聞標題的列表視圖。
If I set say an array of objects with a value initially I can't manipulate it.如果我設置了一個初始值的對象數組，我將無法操作它。 That's what immutability principle says, right?這就是不變性原則所說的，對吧？ (Correct me if I am wrong.) But, what if I have a new News object that has to be updated? （如果我錯了，請糾正我。）但是，如果我有一個新的 News 對象需要更新怎麼辦？ In usual case, I could have just added the object to the array.通常情況下，我可以將對象添加到數組中。 How do I achieve in this case?在這種情況下我如何實現？ Delete the store and recreate it?刪除商店並重新創建它？ Isn't adding an object to the array a less expensive operation?將一個對象添加到數組中不是一個成本較低的操作嗎？
解決方案：
參考一： https://en.stackoom.com/question/2KHAh參考二： https://stackoom.com/question/2KHAh