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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