How to Sort using NSMutableArray?

Question

I am trying to sort the NSMutableArray with this piece of code

let sortContacts = contactData! as NSArray as? [String]
        print("\(sortContacts.sort())")

I am trying to convert the NSMutableArray to Array of String but when it comes to print("\(sortContacts.sort())") its giving me nil

Anyone who can suggest me sorting through NSMutableArray?

You can skip the as NSArray and just use as? [String] and then just use the Swift array sort method. It needs a closure that performs the comparison for sorting — Paulw11
– Paulw11, Commented Dec 5, 2016 at 11:34
if i print the value of contactData it shows me this "<Waev_Admin_4_0.ContactDB: 0x7a72e450>", "<Waev_Admin_4_0.ContactDB: 0x7a730e10>", "<Waev_Admin_4_0.ContactDB: 0x7a731170>", "<Waev_Admin_4_0.ContactDB: 0x7a7314d0>", "<Waev_Admin_4_0.ContactDB: 0x7a731830>", "<Waev_Admin_4_0.ContactDB: 0x7a731b60>", "<Waev_Admin_4_0.ContactDB: 0x7a731e70>", "<Waev_Admin_4_0.ContactDB: 0x7a7321a0>", "<Waev_Admin_4_0.ContactDB: 0x7a732500>", "<Waev_Admin_4_0.ContactDB: 0x7a7328a0>" — Jayesh Gyanchandani
– Jayesh Gyanchandani, Commented Dec 5, 2016 at 11:40
@Paulw11 in swift 2 still need to downcast to NSArray i think — Tj3n
– Tj3n, Commented Dec 5, 2016 at 11:42

dasdom · Accepted Answer · 2016-12-05 11:30:43Z

1

The class NSMutableArray has several sort methods. You should read the documentation. One of the sort methods is this one.

By the way: a ! in Swift code is a code smell.

answered Dec 5, 2016 at 11:30

dasdom

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Comments

Tj3n · Accepted Answer · 2016-12-05 11:40:30Z

0

This works, just make sure your NSMutableArray contains only string, else use if let:

let contactData = NSMutableArray(array: ["c","b","a"])
let sortContacts = contactData as NSArray as! [String]
print(sortContacts.sort())

answered Dec 5, 2016 at 11:40

Tj3n

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