Scala Interview Questions | Cloud Data Engineer #ProgrammingTips #adf #scala #java #javaprogramming

Q38. Explain the concept of type classes in Scala and their role in providing ad-hoc polymorphism. Provide an example

Unlock Flexible Scala Code! 🚀 Type classes give you ad-hoc polymorphism for extensible designs. See how! #ScalaLang #DevTips #FP #Scala #TypeClasses #Polymorphism #ScalaTips #Development #AdHocPolymorphism

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[CloudMaster_Abhiram]

Code:

// Type class definition for ordering
trait MyOrdering[A] {
def compare(x: A, y: A): Int
}

// Type class instance for ordering integers
implicit object IntOrdering extends MyOrdering[Int] {
def compare(x: Int, y: Int): Int = x - y
}

// Type class instance for ordering strings
implicit object StringOrdering extends MyOrdering[String] {
def compare(x: String, y: String): Int = x.compareTo(y)
}

// Generic function using type class
def findMax[A](list: List[A])(implicit ord: MyOrdering[A]): A = {
list.reduceLeft((x, y) => if (ord.compare(x, y) > 0) x else y)
}

val intList = List(5, 2, 8, 3)
val stringList = List("apple", "orange", "banana")

val maxInt = findMax(intList)
val maxString = findMax(stringList)

println(s"Max integer: $maxInt")
println(s"Max string: $maxString")