Running Average library - resetting sample count

In the code below what is the purpose of the variable "samples" ? And what happens if one does not reset it after a specified number of samples ? I thought the Moving Average count size ( 10 in this example ) prevents the sample array from building more than that ... maybe my understanding is wrong ?

//
//    FILE: runningAverageTest.pde
//  AUTHOR: Rob Tillaart
// VERSION: 0.1.01
//    DATE: 2012-12-30
//
// PUPROSE: show working of runningAverage
//

#include "RunningAverage.h"

RunningAverage myRA(10);
int samples = 0;

void setup(void) 
{
  Serial.begin(115200);
  Serial.println("Demo RunningAverage lib");
  Serial.print("Version: ");
  Serial.println(RUNNINGAVERAGE_LIB_VERSION);
  myRA.clear(); // explicitly start clean
}

void loop(void) 
{
  long rn = random(0, 1000);
  myRA.addValue(rn * 0.001);
  samples++;
  Serial.print(samples);
  Serial.print("\t Running Average: ");
  Serial.println(myRA.getAverage(), 3);
  
  if (samples == 300)
  {
    samples = 0;
    myRA.clear();
    Serial.println();
  }
  delay(10);
}

You are overthinking. The code you are questioning is meant to exercise the RunningAverage class. That's it. There is nothing special about samples, 300, or resetting.

My query was exactly that .. what is the purpose of the samples and if it has no role to play why have it at all ?