How to declare an empty array of type 'CNLabeledValue' using Swift 3?

Question

The code that used to work in iOS 9 was:

var valuesArray : [CNLabeledValue] = []

But I can't figure out how to do it in Swift 3.

`CNLabeledValue` is a generic class in Swift 3, so you can't have something of type `CNLabeledValue` — it has to be `CNLabeledValue`. Which "Something" it is depends on what you're doing with this array, so there's not much more help we can provide without a bigger picture of how your array is used. — rickster, Sep 23 '16 at 23:33
I'm working with the Contacts Framework, so is an array of CNPhoneNumber. — Carlos Borges, Sep 24 '16 at 01:16

score 2 · Answer 1 · edited May 23 '17 at 12:13

2

This is the solution:

var phoneNumbers : [CNLabeledValue<CNPhoneNumber>] = []

As OOPer pointed out in this post:

CNLabeledValue's generic parameter is declared as <ValueType : NSCopying, NSSecureCoding>. So, in this case, you can choose any type which conforms to NSCopying and NSSecureCoding. NSString does and String does not.

edited May 23 '17 at 12:13

Community

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answered Sep 24 '16 at 00:53

Carlos Borges

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The referred sentence may lead some misunderstandings in your case. You may need to choose one appropriate type for `ValueType` -- in your case, it's `CNPhoneNumber`. The part "any type" does not apply to your issue. – OOPer Sep 24 '16 at 05:51

score 0 · Answer 2 · answered Sep 24 '16 at 05:59

something like this (with example to fill out phone number):

            let phonesArray : [Phones] = phones!
            var phonesToAdd = [CNLabeledValue]()
            for phone in phonesArray
            {
                if let phoneT = phone.phoneType
                {
                    if phoneT.lowercaseString == "mobile"
                    {
                        let mobilePhone = CNLabeledValue(label: "mobile",value: CNPhoneNumber(stringValue: phone.phone))
                        phonesToAdd.append(mobilePhone)
                    }
                    if phoneT.lowercaseString == "landline"
                    {
                        let landlinePhone = CNLabeledValue(label: "landline",value: CNPhoneNumber(stringValue: phone.phone))
                        phonesToAdd.append(landlinePhone)
                    }
                }
            }
            contactData.phoneNumbers = phonesToAdd

The OP designates Swift 3, your code seems to be written in Swift 2. — OOPer, Sep 24 '16 at 06:11
Ok, in case of swift 3 make sense to write something like this [CNLabeledValue]() — nerowolfe, Sep 24 '16 at 06:15

How to declare an empty array of type 'CNLabeledValue' using Swift 3?

2 Answers2