Local Functions

Define a helper inside another method.

LocalFunctions.scala

object Main {
  def main(args: Array[String]): Unit = {
    val base = 

    def addOne(value: Int): Int = {
      value + 1
    }

    val result = addOne(base)

    println("base=" + base)
    println("result=" + result)
  }
}

object Main {
  def main(args: Array[String]): Unit = {
    val base = 

    def addOne(value: Int): Int = {
      value + 1
    }

    val result = addOne(base)

    println("base=" + base)
    println("result=" + result)
  }
}

local-functions A local function belongs to the block where it is defined. It keeps a helper close to the code that uses it.