Using Array and let

Where do you wrote to the label ?

Your empty array is an empty array, so sum will be 0.

Line 7 is useless. Should be replaced by the filling of the array.

you have to add line 14 to write to the UILabel.

  @IBOutlet var nameHere: UITextField!

    @IBOutlet var sumHere: UILabel!

    @IBAction func submit(_ sender: Any) {

        // USELESS let (a, b, c, d, e, f, g, h, i) = (1, 2, 3, 4, 5, 6, 7, 8, 9)
        var theyArray: [Int] = [1, 2, 3, 4, 5, 6, 7, 8, 9]     // Now you have elements in the array
        var sum = 0
        for number in emptyArray {
            sum += number
        }

     sumHere.text = String(sum)          // ADD THIS LINE
}

Note: to compute the sum of items of the array, use reduce:

let sum = theyArray.reduce(0, +)

Thanks so much for your help. I will revamp my code. the reason I had the let commands equial a number is... each letter will equal a specific number. So when I use a text field like nameHere, it needs to break the letters into an array and calculate the letters sum. Hope that makes sense. I purchased an xcode book several years back and Udemy course last year. I not good but enjoy playing with code. thanks again for the help

OK, then you can do this :

let (a, b, c, d, e, f, g, h, i) = (1, 2, 3, 4, 5, 6, 7, 8, 9)
var theArray: [Int] = [a, b, c, d, e, f, g, h, i]

I had some typos in the code :

  @IBOutlet var nameHere: UITextField!

    @IBOutlet var sumHere: UILabel!

    @IBAction func submit(_ sender: Any) {

        // USELESS let (a, b, c, d, e, f, g, h, i) = (1, 2, 3, 4, 5, 6, 7, 8, 9)
        var theArray: [Int] = [1, 2, 3, 4, 5, 6, 7, 8, 9]     // Now you have elements in the array
        var sum = 0
        for number in theArray {          // theArray of course
            sum += number
        }

     sumHere.text = String(sum)          // ADD THIS LINE
}

Don't forget to close the thread by marking correct answer if that solves. Good continuation.

Hi Claude31... I really appreciate your assistance in trying to help me and you have helped. I know it is not you. I have not explained this well enough. If you can give it one more look I would appreciate it. Line 95 needs to autopopulate from what I enter in on line 92.

//@IBOutlet var nameHere: UITextField!

//@IBOutlet var sumHere: UILabel!

//@IBAction func submit(_ sender: Any) {

91 let (k, b, n, d, e, f, g, h, y) = (1, 2, 3, 4, 5, 6, 7, 8, 9) //working perferctly

92 var nameHere = "abcd" //working perferctly

93 let characters = Array(nameHere) //working perferctly

95 let array: [Int] = [h,y] // here is where my problem is. I need this Int array to auto populate from line 92 like line 93 does. This provides me with the total of what is input on line 92. This works if I enter manually like h,y = 17 on line 95.

97 var sum = array.reduce(0, +) //working perferctly

98 for number in array { //working perferctly

99 sum += number //working perferctly

100 }

//sumHere.text = String(sum) //working perferctly

Want to be sure I understand.

This works, right ?

let (k, b, n, d, e, f, g, h, y) = (1, 2, 3, 4, 5, 6, 7, 8, 9)
var nameHere = "abcd" 
let characters = Array(nameHere) 

let array: [Int] = [h,y]          // array is [8, 9]

So what do you want ? put all the items of the tuple in the array ?

something like

let tuple = (1, 2, 3, 4, 5, 6, 7, 8, 9)

let array2 = Array(tuple)

But that does not work of course.

I've not found a clean solution.

The best I could get is :

let tuple = (1, 2, 3, 4, 5, 6, 7, 8, 9)
let array2 = [tuple.0, tuple.1, tuple.2, tuple.3, tuple.4, tuple.5, tuple.6, tuple.7, tuple.8]

One could think to iterate teuple.i, but that does not work.

See discussions here if you want to dig in:

h ttps://stackoverflow.com/questions/41852812/swift-access-tuple-elements-using-variables-arguments

h ttps://stackoverflow.com/questions/24746397/how-can-i-convert-an-array-to-a-tuple

Lines 1-4 work correctly. Line 2 will be where I enter my text, which will be a name. Line 3 actually breaks each letter of the name into an array (nameHere). I assume at this point nameHere is a stringed array. Line 5 however is an array that is a Int and I want the text entered from line 2 to auto populate the corresponding numbers, so I can get a total sum of the letters entered into line2.

Thanks for the links to tuples. I will read up a bit more on tuples and see if that will work for me. I appreciate your guidance and help. thank you so much. My God bless you in some way today.

let (k, b, n, d, e, f, g, h, y) = (1, 2, 3, 4, 5, 6, 7, 8, 9)

• var nameHere = "abcd"
• let characters = Array(nameHere)
• let array: [Int] = [h,y] // array is [8, 9]

I want the text entered from line 2 to auto populate the corresponding numbers, so I can get a total sum of the letters entered into line2.

Could you show exactly what you would like to see in array ?

What are the numbers you mention ?

In fact, using tuples as (1, 2, 3, 4, 5, 6, 7, 8, 9) cause complexity.

You could also define directly the arrays :

let array = [1, 2, 3, 4, 5, 6, 7, 8, 9]

or, if you want to associate a letter, use dictionary:

let dict = ["k":1, "b":2, "n":3, "d":4, "e":5, "f":6, "g":7, "h":8, "y":9]

To get the total:

var sum = 0
for value in dict.values {
    sum += value
}
print(sum)

You get

45

to get the total of characters in characters that are in nameHere

var sum = 0
for (key, value) in dict where nameHere.contains(key) {
    sum += value
}
print(sum)

For nameHere = "abcd", you get

6

Sorry for not explaining very well.

I have a tuple that assignes a number to each letter of the alphabet. let (a,b,c,etc...) = (1,2,3,etc...)

I have a UITextField called nameHere. When I enter alphabet characters in nameHere and press submit, I want to get two outputs.

The first output is converting nameHere to an array creating individual characters.

The second output is getting a sum of alphabet characters that were input in nameHere.

//@IBOutlet var nameHere: UITextField!

//@IBOutlet var sumHere: UILabel!

//@IBAction func submit(_ sender: Any) {

L91 let (k, b, n, d, e, f, g, h, y) = (1, 2, 3, 4, 5, 6, 7, 8, 9) //working perferctly

L92 var nameHere = "abcd" //working perferctly

L93 let characters = Array(nameHere) //working perferctly

L95 let array: [Int] = [h,y] // here is where my problem is. I need this Int array to auto populate from line 92 like line 93 does. This provides me with the total of what is input on line 92. This works if I enter manually like h,y = 17 on line 95.

L97 var sum = array.reduce(0, +) //working perferctly

L98 for number in array { //working perferctly

L99 sum += number //working perferctly

L100 }

L102 //sumHere.text = String(sum) //working perferctly

I feel you do not read what I posted. Did you try the code I sent ? Why doen't it give you the result you want ?

Tell what is expected result for the sum with nameHere = "abcd"

The first output is converting nameHere to an array creating individual characters.

OK, you did it

The second output is getting a sum of alphabet characters that were input in nameHere.

That is exactly what I propose you. Why isn't it OK ?

You are going with tuple. Why do you need them ?

What do you do with (k, b, n, d, e, f, g, h, y) ? I do not see them used anywhere.

And there is no convenient way to convert this tuple into an array, so look for another way. That is what I proposed.

Hi Claude, I am sorry you feel I am not reading your message, but I am. You keep telling me to input data into my init array. I do not want to enter anything into it as I want it to populate automatically from nameHere. This is the only part I am missing and I have been reading about tuples, dictionaries, etc... and try to convert the string array to an init array for auto population. I will be looking at what you sent a couple of days ago. Thanks for what help you have provided.

Can you show through an example which array you want to populate, from which content and how.

I understaood that was what you did with :

L92 var nameHere = "abcd" //working perferctly

L93 let characters = Array(nameHere) //working perferctly

you have populated the array characters with nameHere.

So, what is missing here.

What is (1, 2, 3, 4, 5, 6, 7, 8, 9) ? How is it entered (by user ? In which form ?)

What is the link with nameHere.

I just don't understand what you try to achieve. Is it a kind of Scrabble game ?

Please describe precisely the scenario, in the form :

- there is a String nameHere "abcd"; entered by user ?

- I convert to and array of chars characters

- I have another array ?

- It is entered by ?

With these 2 data, I want to compute WHAT ?

Hi Claude,

No sir, no game. My dad is a bible scholar and he did extensive research on revelations. In his research he told me God provided him with a number system to calculate the antichrist. I was able to create him an excel spreadsheet where he enters in a name and and it outputs a sum.

A little more about me. Last year I purchased a course from Udemy and was going through it. As I was working through the courses, I became curious and wanted to create this iphone app to see if I could do it; since I did it in excel. So, I started playing with let, tuples, arrays, dictionarys, sums, etc... things I learned from my courses. I have become intrigued with xcode and enjoy playing with it. Not intended to publish. Here is what I am looking for.

NameHere = kenny

Submit button to execute

Sum = 21 (1,5,3,3,9)

this is where I was using the tuple: let (k, b, n, d, e, f, g, h, y) = (1, 2, 3, 4, 5, 6, 7, 8, 9)

I was using the string array trying to convert it to a int array.

Hi Claude,

That solved my problem. Thank you for all your help!!!!!

I found out one thing in this. I don't know dittle about xcode.

I will pray that God will bless you today for your willingness to help.

In closing: Jesus is the answer. He is the way to eternal life. With this you and I can laugh about how ignorant I am with coding when we get to heaven.