Value of type CharacterSet has no member InvertedSet - Swift 3

Question

I am trying to convert over swift 2 code to swift 3:

var customAllowedSet =  NSCharacterSet(charactersInString:"=\"#%/<>?@\\^`{|}").invertedSet

It throws this error:

Value of type CharacterSet has no member InvertedSet

"Editor->Convert->To current Swift syntax..." fixes the problem automatically for you. — Martin R, Jul 25 '17 at 07:27

ninjaproger · Accepted Answer · 2017-07-25T00:14:55.817

6

According to Apple documentation the name of invertedSet method in Swift 3 was changed to just inverted. So try this:

var customAllowedSet =  CharacterSet(charactersIn:"=\"#%/<>?@\\^`{|}").inverted

PS: init(charactersInString:) of CharacterSet also changed to init(charactersIn:)

edited Jul 25 '17 at 00:14

answered Jul 24 '17 at 20:31

ninjaproger

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Leo Dabus · Answer 2 · 2017-07-24T21:59:20.773

2

In Swift 3 you are also supposed to drop the NS prefix. You should use CharacterSet instead of NSCharacterSet. You should also declare it as a constant.

let customAllowedSet =  CharacterSet(charactersIn: "=\"#%/<>?@\\^`{|}").inverted

You can also declare it as a static property extending CharacterSet as follow:

extension CharacterSet {
    static let customAllowedSet = CharacterSet(charactersIn:"=\"#%/<>?@\\^`{|}").inverted
}

CharacterSet.customAllowedSet

edited Jul 24 '17 at 21:59

answered Jul 24 '17 at 21:14

Leo Dabus

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Actually you can use both `NSCharacterSet` and `CharacterSet`, see: https://developer.apple.com/documentation/foundation/nscharacterset – ninjaproger Jul 24 '17 at 22:13
I never said he couldn't. I said he should. – Leo Dabus Jul 24 '17 at 22:16
Yes, but without a detailed context where he uses it you can't say "you should" – ninjaproger Jul 24 '17 at 22:17
1

Why would you need to use NSCharacterSet? – Leo Dabus Jul 24 '17 at 22:18
:) when you need reference semantics or other Foundation-specific behavior. lol – ninjaproger Jul 24 '17 at 22:21

Value of type CharacterSet has no member InvertedSet - Swift 3

2 Answers2