diff --git a/Examples/iOS Example/Sources/HeaderFooterSection.swift b/Examples/iOS Example/Sources/HeaderFooterSection.swift
index dda28e64..17252942 100644
--- a/Examples/iOS Example/Sources/HeaderFooterSection.swift	
+++ b/Examples/iOS Example/Sources/HeaderFooterSection.swift	
@@ -4,12 +4,14 @@ import UIKit
 
 class HeaderFooterSection: UITableViewHeaderFooterView {
     
+    private let numberOflinesCornerRadius = 10
+
     lazy var titleLabel: UILabel = {
         let label =  UILabel()
 
         label.text = "      "
         label.isSkeletonable = true
-        label.linesCornerRadius = 10
+        label.linesCornerRadius = numberOflinesCornerRadius
 
         return label
     }()
diff --git a/Examples/iOS Example/Sources/UITextViewByCodeViewController.swift b/Examples/iOS Example/Sources/UITextViewByCodeViewController.swift
index 139526b2..f91779ae 100644
--- a/Examples/iOS Example/Sources/UITextViewByCodeViewController.swift	
+++ b/Examples/iOS Example/Sources/UITextViewByCodeViewController.swift	
@@ -4,11 +4,18 @@ import UIKit
 import SkeletonView
 
 class UITextViewByCodeViewController: UIViewController {
+    
+    private let numberOflinesCornerRadius = 10
+    private let topAnchorConstraintConst: CGFloat = 10
+    private let leftAnchorConstraintConst: CGFloat = 10
+    private let rightAnchorConstraintConst: CGFloat = -10
+    private let heightAnchorConstraintConst: CGFloat = 100
+
     lazy var textView: UITextView = {
         let tv = UITextView()
         
         tv.text = "              "
-        tv.linesCornerRadius = 10
+        tv.linesCornerRadius = numberOflinesCornerRadius
         tv.isSkeletonable = true
         tv.translatesAutoresizingMaskIntoConstraints = false
         
@@ -32,10 +39,10 @@ class UITextViewByCodeViewController: UIViewController {
     }
     
     func setupElementsConstraints() {
-        textView.topAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.topAnchor, constant: 10).isActive = true
-        textView.leftAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.leftAnchor, constant: 10).isActive = true
-        textView.rightAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.rightAnchor, constant: -10).isActive = true
-        textView.heightAnchor.constraint(equalToConstant: 100).isActive = true
+        textView.topAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.topAnchor, constant: topAnchorConstraintConst).isActive = true
+        textView.leftAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.leftAnchor, constant: leftAnchorConstraintConst).isActive = true
+        textView.rightAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.rightAnchor, constant: rightAnchorConstraintConst).isActive = true
+        textView.heightAnchor.constraint(equalToConstant: heightAnchorConstraintConst).isActive = true
     }
     
     func showSkeletonForElements() {
diff --git a/Examples/iOS Example/Sources/ViewController.swift b/Examples/iOS Example/Sources/ViewController.swift
index cb80e51c..11441b5d 100644
--- a/Examples/iOS Example/Sources/ViewController.swift	
+++ b/Examples/iOS Example/Sources/ViewController.swift	
@@ -10,27 +10,41 @@ import UIKit
 import SkeletonView
 
 class ViewController: UIViewController {
+    
+    // MARK: - Constants
+    
+    private let estimatedRowHeight = 120.0
+    private let estimatedSectionFooterHeight = 20.0
+    private let estimatedSectionHeaderHeight = 20.0
+    
+    struct AccessibilityIdentifier {
+        static let tableViewHeaderIdentifier = "HeaderIdentifier"
+        static let tableViewFooterIdentifier = "FooterIdentifier"
+    }
+
+    // MARK: - IBOutlet
+    
     @IBOutlet weak var tableview: UITableView! {
         didSet {
             tableview.rowHeight = UITableView.automaticDimension
             tableview.sectionHeaderHeight = UITableView.automaticDimension
             tableview.sectionFooterHeight = UITableView.automaticDimension
-            tableview.estimatedRowHeight = 120.0
-            tableview.estimatedSectionFooterHeight = 20.0
-            tableview.estimatedSectionHeaderHeight = 20.0
-            tableview.register(HeaderFooterSection.self, forHeaderFooterViewReuseIdentifier: "HeaderIdentifier")
-            tableview.register(HeaderFooterSection.self, forHeaderFooterViewReuseIdentifier: "FooterIdentifier")
+            tableview.estimatedRowHeight = self.estimatedRowHeight
+            tableview.estimatedSectionFooterHeight = self.estimatedSectionFooterHeight
+            tableview.estimatedSectionHeaderHeight = estimatedSectionHeaderHeight
+            tableview.register(HeaderFooterSection.self, forHeaderFooterViewReuseIdentifier: AccessibilityIdentifier.tableViewHeaderIdentifier)
+            tableview.register(HeaderFooterSection.self, forHeaderFooterViewReuseIdentifier: AccessibilityIdentifier.tableViewFooterIdentifier)
         }
     }
     
-    @IBOutlet weak var avatarImage: UIImageView! {
+    @IBOutlet private weak var avatarImage: UIImageView! {
         didSet {
             avatarImage.layer.cornerRadius = avatarImage.frame.width/2
             avatarImage.layer.masksToBounds = true
-        } 
+        }
     }
     
-    @IBOutlet weak var colorSelectedView: UIView! {
+    @IBOutlet private weak var colorSelectedView: UIView! {
         didSet {
             colorSelectedView.layer.cornerRadius = 5
             colorSelectedView.layer.masksToBounds = true
@@ -38,16 +52,19 @@ class ViewController: UIViewController {
         }
     }
 
-    @IBOutlet weak var switchAnimated: UISwitch!
-    @IBOutlet weak var skeletonTypeSelector: UISegmentedControl!
-    @IBOutlet weak var showOrHideSkeletonButton: UIButton!
-    @IBOutlet weak var transitionDurationLabel: UILabel!
-    @IBOutlet weak var transitionDurationStepper: UIStepper!
+    @IBOutlet private weak var switchAnimated: UISwitch!
+    @IBOutlet private  weak var skeletonTypeSelector: UISegmentedControl!
+    @IBOutlet private weak var showOrHideSkeletonButton: UIButton!
+    @IBOutlet private weak var transitionDurationLabel: UILabel!
+    @IBOutlet private weak var transitionDurationStepper: UIStepper!
     
     var type: SkeletonType {
         return skeletonTypeSelector.selectedSegmentIndex == 0 ? .solid : .gradient
     }
     
+    
+    // MARK: - Life Cycle
+
     override func viewDidLoad() {
         super.viewDidLoad()
         tableview.isSkeletonable = true
@@ -155,6 +172,8 @@ class ViewController: UIViewController {
     }
 }
 
+// MARK: - Extensions
+
 extension ViewController: UIPickerViewDelegate, UIPickerViewDataSource {
     func numberOfComponents(in pickerView: UIPickerView) -> Int {
         return 1