CODEWITHSUNDEEP
iosarraysswift
RDowns
RDowns

Reputation: 659

How do I access just the second part of these arrays in Swift 3?

I use the following function so I can select 2 rows in a table:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

    self.selectedCellTitle = self.communityPlayers[indexPath.row]
    cellId = indexPath.row
    //print (self.communityPlayerIds[indexPath.row])

    if let cell = tableView.cellForRow(at: indexPath) {
        if cell.isSelected {
            cell.accessoryType = .checkmark
        }
    }

    if let sr = tableView.indexPathsForSelectedRows {
        print("didSelectRowAtIndexPath selected rows:\(sr)")
        if sr.count == 2{
            print ("one ", sr[0])
            print ("two ", sr[1])
        }
    }


}

the print("didSelectRowAtIndexPath selected rows:\(sr)") line outputs something like this:

didDeselectRowAtIndexPath selected rows:[[0, 2], [0, 3]]

I want to access the second int only in each array (discarding the 0's). I have tried using print ("one ", sr[0]) to attempt this but this outputs the following:

one [0, 2]

In the example above I only want to access the 2 so I can store that in a separate variable.

How can I access the second part only of these arrays? (the 2, and 3)

Upvotes: 1

Views: 70

Answers (2)

ganzogo
ganzogo

Reputation: 2594

If you want an array containing just the second numbers, you can use a map, like this:

sr.map { $0[1] }

Or, since they are index paths, this is neater:

sr.map { $0.row }

Upvotes: 3

Kayla Galway
Kayla Galway

Reputation: 672

Just to be clear, sr = [[0,2],[0,3]] ?

If so, you have two arrays. 

let firstArray = sr[0]
//you will see this would print as [0,2]
let numberTwo = firstArray[1]
//you will see this would print as 2

Upvotes: 2

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