Utilizing the Copy Method
Scala case classes have a useful method called copy that generates a new instance of the case class with a few updated fields. Below is the Scala program to implement the above approach:
// Define a case class
case class Person(name: String, age: Int)
// Create an instance of the case class
val person1 = Person("Alice", 30)
// Clone the instance and change just one field
val person2 = person1.copy(age = 35)
// Output
println("Original Person: " + person1)
println("Modified Person: " + person2)
In this example, the person1 instance’s copy method is used to create a new instance, person2, with the name field left unaltered and the age field set to 35.
Output:
How to clone a Case Class instance and change just one field in Scala?
Using the copy function that case classes offer, you may clone an instance of a case class in Scala and modify a single field. You may create a new instance of a case class with updated fields while maintaining the integrity of the other fields by using the copy method that case classes automatically produce.
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