Updating code for property wrappers

Properties/Property wrappers/MyPlayground.playground/Contents.swift

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+import UIKit
+
+/* Thank you for downloading the code, I hope the video on property wrapper helped you and if you have any questions then please feel free to ask them on the channel as a comment OR as email, My email Id is mentioned in the code :)
+ Do subscribe to the channel and share it with your friends OR on any social media you like ~codecat15
+ */
+
+//extension String
+//{
+//    func isValidEmail(email: String) -> Bool {
+//        let regex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-za-z]{2,64}"
+//        let pred = NSPredicate(format: "SELF MATCHES %@", regex)
+//        return pred.evaluate(with: email)
+//    }
+//}
+
+@propertyWrapper
+struct EmailPropertyWrapper
+{
+    private var _value: String
+    var wrappedValue: String
+    {
+        get
+        {
+            return isValidEmail(email: _value) ? _value : String()
+        }
+        set
+        {
+            _value = newValue
+        }
+    }
+
+    init(_emailValue: String) {
+        _value = _emailValue
+    }
+
+    private func isValidEmail(email: String) -> Bool {
+        let regex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-za-z]{2,64}"
+        let pred = NSPredicate(format: "SELF MATCHES %@", regex)
+        return pred.evaluate(with: email)
+    }
+}
+
+struct Employee
+{
+    @EmailPropertyWrapper var employeeEmailId: String
+}
+
+struct User
+{
+    var name: String
+    @EmailPropertyWrapper var email: String
+
+    func validate() -> Bool
+    {
+        if(name.isEmpty || email.isEmpty)
+        {
+            debugPrint("name and a valid email is required and cannot be empty")
+            return false
+        }
+        return true
+    }
+
+    func registerUser()
+    {
+        if(validate())
+        {
+            //saving user records code...
+            debugPrint("User data saved")
+        }
+    }
+}
+
+let user = User(name: "codecat15", email: EmailPropertyWrapper(_emailValue:"codecat15gmail.com"))
+user.registerUser()

Properties/Property wrappers/MyPlayground.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>

Properties/Property wrappers/MyPlayground.playground/playground.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Properties/Property wrappers/MyPlayground.playground/timeline.xctimeline

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+<?xml version="1.0" encoding="UTF-8"?>
+<Timeline
+   version = "3.0">
+   <TimelineItems>
+      <LoggerValueHistoryTimelineItem
+         documentLocation = "file:///Users/ravirdixit/Desktop/MyPlayground.playground#CharacterRangeLen=1884&amp;CharacterRangeLoc=0&amp;EndingColumnNumber=0&amp;EndingLineNumber=74&amp;StartingColumnNumber=0&amp;StartingLineNumber=0&amp;Timestamp=600486351.617571"
+         selectedRepresentationIndex = "0"
+         shouldTrackSuperviewWidth = "NO">
+      </LoggerValueHistoryTimelineItem>
+      <LoggerValueHistoryTimelineItem
+         documentLocation = "file:///Users/ravirdixit/Desktop/MyPlayground.playground#CharacterRangeLen=1884&amp;CharacterRangeLoc=0&amp;EndingColumnNumber=0&amp;EndingLineNumber=74&amp;StartingColumnNumber=0&amp;StartingLineNumber=0&amp;Timestamp=600486351.617712"
+         selectedRepresentationIndex = "0"
+         shouldTrackSuperviewWidth = "NO">
+      </LoggerValueHistoryTimelineItem>
+   </TimelineItems>
+</Timeline>