如何将快速元组数组转换为NSMutableArray？ [英] How to cast a swift array of tuples to NSMutableArray?

问题描述

我有快速元组 [（String，String）] 的数组，并希望将此数组转换为NSMutableArray。我已经尝试过了，但是它不起作用：

I have swift array of tuples [(String, String)] and would like to cast this array to NSMutableArray. I have tried this and it is not working:

let myNSMUtableArray = swiftArrayOfTuples as! AnyObject as! NSMutableArray

推荐答案

由于类型迅速，例如元组或 Struct 在Objective-C中没有等效项，因此无法将其强制转换为或引用为 AnyObject 其中 NSArray 和 NSMutableArray 将其元素类型限制为。

Since swift types like Tuple or Struct have no equivalent in Objective-C they can not be cast to or referenced as AnyObject which NSArray and NSMutableArray constrain their element types to.

如果必须从快速元组数组中返回NSMutableArray，则下一个最好的事情可能是返回2个元素数组的数组：

The next best thing if you must return an NSMutableArray from a swift Array of tuples might be returning an Array of 2 element Arrays:

let itemsTuple = [("Pheonix Down", "Potion"), ("Elixer", "Turbo Ether")]
let itemsArray = itemsTuple.map { [$0.0, $0.1] }
let mutableItems = NSMutableArray(array: itemsArray)

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