Swift 有訪問修飾符嗎？ - Does Swift have access modifiers?

問題：

In Objective-C instance data can be public , protected or private .在 Objective-C 實例數據可以是public 、 protected或private 。 For example:例如：

@interface Foo : NSObject
{
  @public
    int x;
  @protected:
    int y;
  @private:
    int z;
  }
-(int) apple;
-(int) pear;
-(int) banana;
@end

I haven't found any mention of access modifiers in the Swift reference.我在 Swift 參考中沒有發現任何提及訪問修飾符的內容。 Is it possible to limit the visibility of data in Swift?是否可以限制 Swift 中數據的可見性？

---

解決方案：

參考一： https://stackoom.com/question/1ciVy
參考二： Does Swift have access modifiers?