How to join the objects of NSMutableArray with a separator in Swift3

Question

I have got an NSMutableArray declared like as:

var operatingDays = NSMutableArray()

And next i am appending the objects into the array like this :

for operatingDays in forecast.operatingDays! {
              print(operatingDays.days)
              print(operatingDays.times)
              self.operatingDays.add(operatingDays.days)
            }

So the operating days array now contains arrays.

Now i want to convert each array to string separated with a space and to show it to the UITableViewCell. For this i am using the code at cellForRowAtIndexPath like this:

cell.operationalDays.text = (operatingDays[indexPath.row] as AnyObject).joined(separator: " ")

But it shows the error :

Cast to [String] instead of AnyObject, your array is an array of arrays? — Reinier Melian
– Reinier Melian, Commented Jul 20, 2017 at 12:07

Reinier Melian · Accepted Answer · 2017-07-20 12:19:21Z

3

As I said in my first comment, casting your operatingDays[indexPath.row] to [String] it works, Try with this

if let arrayOfStrings = operatingDays[indexPath.row] as? [String]
{
  cell.operationalDays.text = arrayOfStrings.joined(separator: " ")
}

Hope this helps

edited Jul 20, 2017 at 12:19

answered Jul 20, 2017 at 12:13

Reinier Melian

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Comments

Arasuvel · Accepted Answer · 2017-07-20 12:16:06Z

1

Solution is below:

var operatingDays = [Any]()
cell.operationalDays.text = (operatingDays[indexPath.row] as? [String])?.joined(separator: " ")

or

if let data = operatingDays[indexPath.row] as? [String] {
     cell.operationalDays.text = data.joined(separator: " ")
}

edited Jul 20, 2017 at 12:16

answered Jul 20, 2017 at 12:11

Arasuvel

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Comments

Sakir Sherasiya · Accepted Answer · 2017-07-20 12:30:46Z

1

Try to joint array as below:

let tempArr = operatingDays[indexPath.row] as! NSArray
cell.operationalDays.text = tempArr.componentsJoined(by: " ")

edited Jul 20, 2017 at 12:30

answered Jul 20, 2017 at 12:22

Sakir Sherasiya

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Comments

Dharma · Accepted Answer · 2017-07-20 12:14:27Z

0

Cast AnyObject to Array to use joined function.

if let isArray = operatingDays[indexPath.row] as? [String] {
    //Now you can able to use joined function
    cell.operationalDays.text = isArray.joined(separator: " ")
}

answered Jul 20, 2017 at 12:14

Dharma

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1 Comment

Dharma Over a year ago

May i know the reason for down voting? is anything wrong let me know i will update myself.No use of down voting without commenting.Thanks

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