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Scala - How to use scan method? Code Example

The code for How to use scan method?

object Demo {
   def main(args: Array[String]) = {
      val nums = List(10, 20, 30, 40)
      //apply operation to create a running 
	  //total of all elements of the list
      val result = nums.scan(0)(_ + _)
      //print result
      println(result)      
   }
}

/*
Output:
List(0, 10, 30, 60, 100)
*/