Saving from array to another array - Swift 3

Question

I did save value to an object mapper called var testing:[Test]? By using this code

let test: Test = Test()! 


var i = 0
    while i < self.array.count{
        let test: Test = Test()!
        test.userId = self.array[i]
        print(test.userId)
        test.firstName = self.array[i+1]
        test.lastName = self.array[i+2]
        test.img1 = self.array[i+3]
        test.img2 = self.array[i+4]
        test.img3 = self.array[i+5]
        test.featuredImg1 = self.array[i+6]
        test.url1 = self.array[i+7]
        test.featuredImg2 = self.array[i+8]
        test.url2 = self.array[i+9]
        test.featuredImg3 = self.array[i+10]
        test.url3 = self.array[i+11]
        test.userId2 = self.array[i+12]
        test.firstName2 = self.array[i+13]
        test.lastName2 = self.array[i+14]
        test.img4 = self.array[i+15]
        test.img5 = self.array[i+16]
        test.img6 = self.array[i+17]
        test.featuredImg4 = self.array[i+18]
        test.url4 = self.array[i+19]
        test.featuredImg5 = self.array[i+20]
        test.url5 = self.array[i+21]
        test.featuredImg6 = self.array[i+22]
        test.url6 = self.array[i+23]

        i = i + 24


        testing?.append(test)

    }
    print(testing?.count)

Which is not working. test.userId print is giving a value inside the loop but when i print the count the value is nil , apparently the values are not being saved correctly.

There is no declaration of testing array also let test: Test = Test()! should be inside the for loop. — Nirav D
– Nirav D, Commented Feb 24, 2017 at 6:50
Declaration of testing at the top of the page : var testing:[Test]? — yasser h
– yasser h, Commented Feb 24, 2017 at 6:54
Is that testing array is an Test array? and do you append test data at the bottom of for loop? Can we see the whole for loop if posible — theduman
– theduman, Commented Feb 24, 2017 at 6:55
You are definitely using too many exclamation and question marks. The array seems to contain non-optional strings. If you declare the array as [String]() you get rid of all type casts, too. — vadian
– vadian, Commented Feb 24, 2017 at 7:21

yasser h · Accepted Answer · 2017-02-24 13:30:28Z

1

I don't know variable s is relevant with your problem but I think it should work like this

 var testing:[Test]?

 for i in 0 ..< self.array.count{

    let test: Test = Test()
    test.userId = self.array[0] as! String?
    print(test.userId)
    test.firstName = self.array[1] as! String?
    test.lastName = self.array[2] as! String?
    test.img1 = self.array[3] as! String?
    test.img2 = self.array[4] as! String?
    test.img3 = self.array[5] as! String?
    test.featuredImg1 = self.array[6] as! String?
    test.url1 = self.array[7] as! String?
    test.featuredImg2 = self.array[8] as! String?
    test.url2 = self.array[9] as! String?
    test.featuredImg3 = self.array[10] as! String?
    test.url3 = self.array[11] as! String?
    test.userId2 = self.array[12] as! String?
    test.firstName2 = self.array[13] as! String?
    test.lastName2 = self.array[14] as! String?
    test.img4 = self.array[15] as! String?
    test.img5 = self.array[16] as! String?
    test.img6 = self.array[17] as! String?
    test.featuredImg4 = self.array[18] as! String?
    test.url4 = self.array[19] as! String?
    test.featuredImg5 = self.array[20] as! String?
    test.url5 = self.array[21] as! String?
    test.featuredImg6 = self.array[22] as! String?
    test.url6 = self.array[23] as! String?

    self.s = self.s! + 24

    //this is where your array is filled with test data.
    testing.append(test)

}

Test Class :

class Test
{
    var userId: String?
    var firstName: String?
    var lastName: String?
    var img1: String?
    var img2: String?
    var img3: String?
    var featuredImg1: String?
    var url1: String?
    var featuredImg2: String?
    var url2: String?
    var featuredImg3: String?
    var url3: String?
    var userId2: String?
    var firstName2: String?
    var lastName2: String?
    var img4: String?
    var img5: String?
    var img6: String?
    var featuredImg4: String?
    var url4: String?
    var featuredImg5: String?
    var url5: String?
    var featuredImg6: String?
    var url6: String?

    init() {

    }


}

edited Feb 24, 2017 at 13:30

yasser h

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answered Feb 24, 2017 at 7:12

theduman

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8 Comments

yasser h Over a year ago

Did not work. I dont know if the problem is in saving the values.

theduman Over a year ago

are you sure your self.array is not empty and your test variable gets the right data?

yasser h Over a year ago

The array is empty , i checked again and testing.append(test) is not saving the values.

theduman Over a year ago

@yasserh then your test variable is empty. did you check the count of testing array. It is zero or same as self.array.count but empty elements?

yasser h Over a year ago

the test array count is 48 , test.anyvalue is not empty , testing array is empty

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