Tour of Scala

Ugniježdene metode

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    U Scali je moguće ugnježdavati definicije metode. Sljedeći objekt sadrži metodu factorial za računanje faktorijela datog broja:

     def factorial(x: Int): Int = {
    def fact(x: Int, accumulator: Int): Int = {
      if (x <= 1) accumulator
      else fact(x - 1, x * accumulator)
    }  
    fact(x, 1)
 }

 println("Factorial of 2: " + factorial(2))
 println("Factorial of 3: " + factorial(3))

    Izlaz ovog programa je:

    Factorial of 2: 2
Factorial of 3: 6
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