Looking for sort drop down list in swift

Question

I'm looking for sort my dropdown list into ascending order.

let set = NSSet(array: arrTemp as! [Any])
let arrNewPredicated = set.allObjects as NSArray
arrAllArrayCode = NSMutableArray (array: arrNewPredicated)

I have 17 elements that looks like this

[0]=(NSTaggedPointerString*)"AAA"
[1]=(NSTaggedPointerString*)"CCC"
[2]=(NSTaggedPointerString*)"BBB"

I would like to order them by ascending order.

You should drop the NS prefix when coding in Swift. Use Set instead of NSSet, Array instead of NSArray/NSMutableArray and String instead of NSString/NSTaggedPointerString — Leo Dabus, Apr 24 '19 at 14:12

score 1 · Answer 1 · edited Apr 24 '19 at 14:32

1

I supposed arrTemp is an array of Strings so:

first of all you're using Swift so as LeoDabus suggests drop NS prefix. Than build your set:

let arrayOfStrings = ["beta", "omega", "alpha", "teta"]
let set = Set<String>(arrayOfStrings)

then just sort it:

let sorted = set.sorted()

edited Apr 24 '19 at 14:32

Mahdi Moqadasi

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answered Apr 24 '19 at 14:19

Alastar

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score 0 · Answer 2 · answered Apr 24 '19 at 14:20

0

If you use an array of sortable elements:

let arrTemp = ["AAA", "CCC", "BBB"]
let set = Set(arrTemp)
let arrNewPredicated = set.sorted { (str1, str2) -> Bool in
    return str1 < str2
    // or use
    // return str2 < str1
}

answered Apr 24 '19 at 14:20

Agisight

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I got the error message : Binary operator '<' cannot be applied to two 'Any' operands – jo7332 May 03 '19 at 11:34

jo7332 · Answer 3 · 2019-05-03T13:15:54.743

0

I found the correct line of code for my issues. If that can help someone..

let set = NSSet(array: arrTemp as! [Any])
let arrNewPredicated = set.allObjects as NSArray
let sortarray = arrNewPredicated.sortedArray(using: [NSSortDescriptor(key: "", ascending: true)])  as NSArray

edited May 03 '19 at 13:15

answered May 03 '19 at 13:04

jo7332

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Looking for sort drop down list in swift

3 Answers3