Swift: Array Size with UITableView - ios

Question

I'm trying to figure out how the array works with Swift. I understand that you use let to create an immutable array and var to create a mutable array. Yet, Swift's array is not quite the same as Objective's NSArray and NSMutableArray. I get that.
In the example that follows, I create a mutable array with one element. Actually, I want to start with no element. But if I do, I won't be able to add a new string to it. If I start with one element, then I won't be able to add a new string to it after the original element is removed. So what am I doing wrong?
Thank you
EDIT
class ViewController: UIViewController {
let textCellIdentifier = "TextCell"
var myArray:[String] = ["GGG"] // or var myArray:[String] = []
#IBAction func add1Tapped(sender:AnyObject) {
let index = tableView1.indexPathForSelectedRow;
let selectedRow = index()?.row
if selectedRow < 0 {
return
} else {
let txt = nameField1.text
myArray.append(txt)
tableView1.reloadData()
}
}
func tableView(tableView: UITableView,numberOfRowsInSection section:Int) -> Int {
return myArray.count
}
func tableView(tableView:UITableView,cellForRowAtIndexPath indexPath:NSIndexPath) -> UITableViewCell {
let cell:UITableViewCell=UITableViewCell(style: UITableViewCellStyle.Subtitle,reuseIdentifier:textCellIdentifier)
let row = indexPath.row
cell.textLabel!.text = myArray[row]
return cell
}
}

Answer 1

all your needs should work as expected:
// create an empty array of strings
var myArray: [String] = []
// add two elements
myArray.append("the first element")
myArray.append("the second element")
// remove both elements
myArray.removeAll()
// add another element
myArray.append("the third but now first element")
myArray.count
EDIT
try and change your add method like this:
#IBAction func add1Tapped(sender:AnyObject) {
if let _ = tableView1.indexPathForSelectedRow, txt = nameField1.text {
print("will append \(txt) to myArray")
myArray.append(txt)
tableView1.reloadData()
}
}