Created strict equality operator

Author: obarcelonap

src/main/scala/advancedfp/Chatbot.scala

@@ -1,13 +1,16 @@
 package advancedfp
 
-object Chatbot extends App {
-  val reply: PartialFunction[String, String] = {
+class Chatbot {
+  def reply: PartialFunction[String, String] = {
     case "Hi" => "Hello"
     case "Bye" => "Ciao"
     case _ => "I don't understand you"
   }
+}
+object Chatbot extends App {
+  val bot = new Chatbot
 
   scala.io.Source.stdin.getLines()
-    .map(reply)
+    .map(bot.reply)
     .foreach(println)
 }

src/main/scala/implicits/Equal.scala

@@ -6,4 +6,11 @@ trait Equal[T] {
 
 object Equal {
   def apply[T](a:T, b:T)(implicit equal: Equal[T]): Boolean = equal.apply(a, b)
+}
+
+object EqualImplicits {
+  implicit class RichEqual[T](value: T) {
+    def ===(other: T)(implicit equal: Equal[T]): Boolean = equal.apply(value, other)
+    def !==(other: T)(implicit equal: Equal[T]): Boolean = !equal.apply(value, other)
+  }
 }

src/main/scala/implicits/User.scala

@@ -6,7 +6,7 @@ case class User(name: String, email: String) {
   }
 }
 
-object implicits {
+object UserImplicits {
   implicit object EqualByName extends Equal[User] {
     override def apply(a: User, b: User): Boolean = a.name == b.name
   }

src/test/scala/advancedfp/ChatbotSpec.scala

@@ -5,19 +5,20 @@ import org.scalatest.matchers.should.Matchers
 
 class ChatbotSpec extends AnyFunSpec with Matchers {
 
+  val bot = new Chatbot
   describe("speak") {
     it ("should reply 'Hi' when input is 'Hello'") {
-      val reply = Chatbot.reply("Hi")
+      val reply = bot.reply("Hi")
 
       reply should be ("Hello")
     }
     it ("should reply 'Ciao' when input is 'Bye'") {
-      val reply = Chatbot.reply("Bye")
+      val reply = bot.reply("Bye")
 
       reply should be ("Ciao")
     }
     it ("should reply 'I don't understand you' when input is anything else") {
-      val reply = Chatbot.reply("hahahaha")
+      val reply = bot.reply("hahahaha")
 
       reply should be ("I don't understand you")
     }

src/test/scala/implicits/UserSpec.scala

@@ -2,7 +2,7 @@ package implicits
 
 import org.scalatest.funspec.AnyFunSpec
 import org.scalatest.matchers.should.Matchers
-import implicits._
+import UserImplicits._
 
 class UserSpec extends AnyFunSpec with Matchers {