EvalExample2.scala

object EvalExample2 extends App {
    
    def twice(value: Int): Int = value * value
    
    def divideBy2(value: Int): Int = value / 2
    
    val value = 42
    val intermediateResult = twice(value)
    val result = divideBy2(intermediateResult)
    println(result)
    
    val result1 = Eval.now(42).map(twice).map(divideBy2)
    println(result1)
    println("Demand The Eval Results")
    println(result1.value)
}

/* OUTPUT
Without Eval Result: 882
Eval Declared only: cats.Eval$$anon$6@39fb3ab6
Demand The Eval Results
With Eval Result: 882
*/