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iOS

Posted by Fares Ksebati
Fares Ksebati
7,426 Points

Fun Facts App - For Loop Question

Hi all,

I am modifying the Fun Facts starter app a little bit. I'd like to pass through my array every time the button is pressed.

struct WorkoutBook {
    let workoutArray = [
        "500",
        "600",
        "800",
        "300",
        "Pull"
    ]

    func doWork() -> String {
        for workout in workoutArray {
            return workout
        }
}
Andres Oliva
Andres Oliva
7,810 Points

What is exactly what you are trying to do? Your code won't work because when you execute the return statement, the function ends and returns the value. It doesn't continue to iterate through your array.

Fares Ksebati
Fares Ksebati
7,426 Points

Hey Andres, thanks for the reply. I would like to iterate through the array, how could I adjust the function to do that?

Andres Oliva
Andres Oliva
7,810 Points

You are already iterating through the array, the question is with what purpose? Or what do you expect to return?

Fares Ksebati
Fares Ksebati
7,426 Points

I would like to return the value within the 'workoutArray' array, and display that value on the screen.

1 Answer

Andres Oliva
Andres Oliva
7,810 Points
Andres Oliva
Andres Oliva
7,810 Points

Ok, then you need to write that code in your View Controller.

You could do this within an IBAction or in viewDidLoad. You need to have at least a label to display the array contents.

Try something like this

for workout in workoutBook.workoutArray {
   funFactLabel.text = funFactLabel.text?.stringByAppendingString(workout)
}

To have that code working, you need to have a label (funFactLabel I suppose) and you need to instantiate your WorkoutBook class like this:

let workoutBook = WorkoutBook()
Andres Oliva
Andres Oliva
7,810 Points

You also need to add a carriage return at the end of the string or you will have your workouts displayed like this: "500800600300Pull"