[O] Optimize stopwatch implementation

ProjectClock/Base.lproj/Main.storyboard

@@ -360,8 +360,8 @@
                                 <nil key="highlightedColor"/>
                             </label>
                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="00:00:00" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="55a-Ig-Fri" customClass="StopwatchText" customModule="ProjectClock" customModuleProvider="target">
-                                <rect key="frame" x="52.5" y="109" width="309" height="95.5"/>
+                                <rect key="frame" x="51" y="109" width="312.5" height="95.5"/>
-                                <fontDescription key="fontDescription" type="system" weight="ultraLight" pointSize="80"/>
+                                <fontDescription key="fontDescription" type="system" weight="thin" pointSize="80"/>
                                 <nil key="textColor"/>
                                 <nil key="highlightedColor"/>
                             </label>
@@ -390,6 +390,7 @@
                         <outlet property="startButton" destination="Jse-AL-cOs" id="iq2-xE-Nir"/>
                         <outlet property="stopButton" destination="O4A-eq-kEz" id="dd7-v0-fqc"/>
                         <outlet property="tableView" destination="O7B-Tj-vT0" id="kfu-vG-sgE"/>
+                        <outlet property="timeLabel" destination="55a-Ig-Fri" id="8eb-Ow-UF1"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="ZlX-5W-Pjn" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>

ProjectClock/StopwatchViewController.swift

@@ -9,9 +9,7 @@ import UIKit
 
 class StopwatchViewController: UIViewController {
 
-    @IBOutlet weak var hourLabel: UILabel!
+    @IBOutlet weak var timeLabel: UILabel!
-    @IBOutlet weak var minuteLabel: UILabel!
-    @IBOutlet weak var secondLabel: UILabel!
     
     @IBOutlet weak var startButton: UIButton!
     @IBOutlet weak var stopButton: UIButton!
@@ -54,12 +52,7 @@ class StopwatchViewController: UIViewController {
             resetTimes()
         }
         
-        if seconds >= 10 { secondLabel.text = "\(seconds)" }
+        timeLabel.text = String(format: "%02i:%02i:%02i", hours, minutes, seconds)
-        else { secondLabel.text = "0\(seconds)" }
-        if minutes >= 10 { minuteLabel.text = "\(minutes)" }
-        else { minuteLabel.text = "0\(minutes)" }
-        if hours >= 10 { hourLabel.text = "\(hours)" }
-        else { hourLabel.text = "0\(hours)" }
     }
     
     @IBAction func stop(_ sender: UIButton) {
@@ -77,29 +70,14 @@ class StopwatchViewController: UIViewController {
         seconds = 0
         lappedTimes = []
         timer.invalidate()
-        secondLabel.text = "00"
+        timeLabel.text = "00:00:00"
-        minuteLabel.text = "00"
-        hourLabel.text = "00"
         tableView.reloadData()
         //startButton.isHidden = false
         //lapButton.isHidden = true
     }
     
     @IBAction func lap(_ sender: UIButton) {
-        var currentSec = ""
+        lappedTimes.append(String(format: "%02i:%02i:%02i", hours, minutes, seconds))
-        if seconds >= 10 { currentSec = "\(seconds)" }
-        else { currentSec = "0\(seconds)" }
-        
-        var currentMin = ""
-        if minutes >= 10 { currentMin = "\(minutes)" }
-        else { currentMin = "0\(minutes)" }
-        
-        var currentHour = ""
-        if hours >= 10 { currentHour = "\(hours)" }
-        else { currentHour = "0\(hours)" }
-        
-        let currentTime = "\(currentHour):\(currentMin):\(currentSec)" //CHECK THIS
-        lappedTimes.append(currentTime)
         
         let indexPath = IndexPath(row: lappedTimes.count - 1, section: 0)
         tableView.insertRows(at: [indexPath], with: .automatic)