Appending an array in swift, having problems

Question

I am getting the error 'AnyObject' does not have a member named 'append' for results that I am trying to post to an array. I'm not sure how to fix the error, as I thought my code was correct. Can someone help me make the proper adjustments? My code is as follows:

import CloudKit
import UIKit
import Foundation

class Items {
    var theSelfie: [String]

    init(record: CKRecord) {
        println("init")
        var record: CKRecord
        var iama: String
        var youarea: String
        var image: CKAsset? // tried also initializing the CKAsset separately
        var postPic: UIImage?

        let database = CKContainer.defaultContainer().publicCloudDatabase
        let container = CKContainer.defaultContainer()
        let publicDB = container.publicCloudDatabase
        let data = CKRecord(recordType: "theUsers")

        var predicate = NSPredicate(value: true)
        let myQuery = CKQuery(recordType: "theUsers", predicate: predicate)

        var mySelfie = theSelfie

        publicDB.performQuery(myQuery, inZoneWithID: nil) { results, error in
            if error != nil {
                println(error)
            } else {
                for record in results{
                    let aselfie = data.objectForKey("selfie")
                        aselfie.append[mySelfie]()
                        return ()
                    }        
                }
            }
        }
    }
}

What is this meant to be: append[mySelfie]? Why are there brackets? What is CKRecord? — dasdom
– dasdom, Commented Feb 4, 2015 at 17:42

Michael Welch · Accepted Answer · 2015-02-04 17:44:35Z

1

The return type of objectForKey is AnyObject!

The type AnyObject doesn't have a method named append. You'll need to cast the return value to the correct type.

In addition, I don't think I see you ever put an entry in data with key "selfie". If you want it to be an array then somewhere you need to call data.setObject

answered Feb 4, 2015 at 17:44

Michael Welch

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Comments

orkoden · Accepted Answer · 2015-02-04 17:44:29Z

1

You're getting aselfie from a dictionary. The dictionary returns objects of type AnyObject. Since you seem confident, that's it's an Array you can cast it to Array or NSArray.

let aselfie = data.objectForKey("selfie") as Array

answered Feb 4, 2015 at 17:44

orkoden

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2 Comments

Brian Nickel Over a year ago

If you cast as an array like that, changes won't get passed back to the object. It would have to be cast as (and backed by) an NSMutableArray. Otherwise it's got to be read/modify/write.

orkoden Over a year ago

You are correct. A mutable copy has to be created first.

Marcos Crispino · Accepted Answer · 2015-02-04 17:52:53Z

0

I don't think that aselfie.append[mySelfie]() is valid Swift syntax. Does it even compile? Maybe you meant aselfie.append(mySelfie)?

Also, how do you know that aselfie is an Array? You should cast it:

let aselfie = data.objectForKey("selfie") as? Array<Whatever>
    aselfie.append[mySelfie]()
    return ()
}

edited Feb 4, 2015 at 17:52

answered Feb 4, 2015 at 17:45

Marcos Crispino

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2 Comments

Emilie Over a year ago

Array<Whatever> is the old syntax, now you need to use [Whatever]

Marcos Crispino Over a year ago

@Emilie You can use either... The old syntax is Whatever[]. As a matter of fact, [Wharever] is a shortcut for Array<Whatever>

Zell B. · Accepted Answer · 2015-02-04 18:02:12Z

0

You should cast aselfie to array then call its append method not its subscript

if let aselfie = data.objectForKey("selfie") as? [AnyObject] // if aselfie is supposed to hold object of single type case it as [ObjcetsToHold]
                    aselfie.append(mySelfie)
                    return ()
                }

edited Feb 4, 2015 at 18:02

answered Feb 4, 2015 at 17:44

Zell B.

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