NSMutableArray cast to swift Array of custom type

Question

I'd like to figure out how to specify or cast an NSMutableArray to a swift Array of a custom type. I currently have 2 files:

First file requires an NSMutableArray for its functionality (passed by reference, ability to remove particular objects with indices I don't know)
Second file uses a Swift array (better memory / throwaway array), with a custom type, which I declare using

let newArray: [CustomType]!

I need to pass the NSMutableArray in as a parameter to a function in the second file, which requires a [CustomType]. When simply calling it:

let newVC = UIViewController(array: mutableArray)

it keeps telling me 'CustomType' is not identical to 'AnyObject'. I've tried calling the function using mutableArray as [CustomType], which does not work either. How can I make the swift Array function accept my NSMutableArray?

Did you refer this dev.eltima.com/post/96538497489/…

Hussain Shabbir
– Hussain Shabbir

2014-12-05 00:32:36 +00:00
Commented Dec 5, 2014 at 0:32 — Hussain Shabbir
– Hussain Shabbir, Commented Dec 5, 2014 at 0:32

Mike Taverne · Accepted Answer · 2014-12-05 06:03:11Z

3

This works for me:

var swiftArray = NSArray(array:mutableArray) as Array<CustomType>

swiftArray is then a Swift array of objects of CustomType. You can pass the array and iterate over it as you would expect.

edited Dec 5, 2014 at 6:03

answered Dec 5, 2014 at 3:08

Mike Taverne

9,3804 gold badges44 silver badges59 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Mike Taverne Over a year ago

Note this only works if your NSMutableArray contains CustomType objects.

user3781236 · Accepted Answer · 2014-12-05 17:58:11Z

1

What I needed was this:

let newVC = UIViewController(array: mutableArray as AnyObject as [CustomType])

answered Dec 5, 2014 at 17:58

user3781236

7282 gold badges9 silver badges23 bronze badges

1 Comment

Mike Taverne Over a year ago

Cool, that is very compact syntax.

Collectives™ on Stack Overflow

NSMutableArray cast to swift Array of custom type

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related