Count words in a string filled by user - ios

Question

As the title says, I want to count the words in a string, which is filled by the user. For that purpose, I will simplify it a little and I will count the white spaces in the string, store the value in an other variable and the print that new variable.
The code I am using is the following:
import UIKit
class TransViewController: UIViewController {
#IBOutlet var trad_text: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
trad_text!.layer.borderWidth = 1
trad_text!.layer.cornerRadius = 20
trad_text!.layer.borderColor = UIColor(red:0.22, green:0.26, blue:0.39, alpha:1.0).cgColor
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
let text = trad_text.text
let num_words = text?.characters.split(separator: " ").map(String.init)
print(num_words)
// Dispose of any resources that can be recreated.
}
But it does not print any number of words. Can someone find why this code gives the error?
Thank you for your time

Answer 1

You can use this code:
var string = "first second third"
let count = string.components(separatedBy: .whitespaces).count
Count equal 3 for this case.

Answer 2

I finally did it with the following code, maybe it will be useful to someone:
import UIKit
import Foundation
class TransViewController: UIViewController {
final class Shared {
static let shared = Shared() //lazy init, and it only runs once
var stringValue : String!
var num_words : Int!
var boolValue : Bool!
}
#IBOutlet var trad_text: UITextView!
#IBOutlet var buttonTrad: UIButton!
#IBOutlet var labelsitoh: UILabel!
#IBAction func butCalc(_ sender: AnyObject) {
let text = trad_text.text
let num_words = (text?.components(separatedBy: " ").count)!-1
Shared.shared.num_words = num_words
}
override func viewDidLoad() {
super.viewDidLoad()
trad_text!.layer.borderWidth = 1
trad_text!.layer.cornerRadius = 20
trad_text!.layer.borderColor = UIColor(red:0.22, green:0.26, blue:0.39, alpha:1.0).cgColor
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}