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iOS

Posted by aaron du
aaron du
5,946 Points

This doesn't make any sense

I am trying to make an app, but I just don't get I get the notion expected output?

this is my code :

import GameKit

class equationProvider {

let multiple1 =

[

"4358  ",
"4627  ",
"3427 ",
"9384 ",
"23 ",
"4529984 ",
"3589 "

]

let multiple2 = [
"379",
"3579",
"278",
"25",
"2598753",
"5",
"185",
"1983",
"34587",
]

func random1() -> String{
    let randomNumber1 = GKRandomSource.sharedRandom().nextInt(upperBound: multiple1.count)
return multiple1[randomNumber1]
}

func random2() -> String{
let randomNumber2 = GKRandomSource.sharedRandom().nextInt(upperBound: multiple2.count)
return multiple2[randomNumber2]
}

}

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var MultiplicationEquation: UILabel!
@IBOutlet weak var userInput: UITextField!


override func viewDidLoad() {
    super.viewDidLoad()


MultiplicationEquation.text = ("\(equationProvider.random1) \rtimes \(equationProvider.random2)")

}




override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.


}

}

and this is my output for the label MultiplicationEquation:

(Function) times (Function)

I am supposed to get a random number, "times" and another random number

can someone tell me what is wrong?

1 Answer

Pasan Premaratne
STAFF
Pasan Premaratne
Treehouse Teacher
Pasan Premaratne
Pasan Premaratne
Treehouse Teacher

Hey there!

You're not calling the function in this line of code

MultiplicationEquation.text = ("\(equationProvider.random1) \rtimes \(equationProvider.random2)")

To call a function, particularly one that doesn't have arguments, you write out the function name followed by a set of empty parentheses without spaces, like so:

equationProvider.random1()
aaron du
aaron du
5,946 Points

hi pasan, after i used your method to do it it still gave me an error like this : Instance member 'random1' cannot be used on type 'equationProvider'; did you mean to use a value of this type instead?

and this is the only line i changed : MultiplicationEquation.text = ("(equationProvider.random1()) \times (equationProvider.random2())")

can you help me again? Please?

Pasan Premaratne
Pasan Premaratne
Treehouse Teacher
Pasan Premaratne
Pasan Premaratne
Treehouse Teacher

You need to create an instance of equation provider before you can use it. Add the following as a stored property:

let equationProvider = EquationProvider()

The code provided earlier should work now. Let me know if you have any questions