A function which tests the distribution of _.sample()

TestingUnderscoreSample.js

// Option 1
(function(arraySize = 10, timesToRun = 1000){
  let myArray = Array.apply(null, {length: arraySize}).map(Number.call, Number);
  let resultsArray = Array.apply(null, Array(arraySize)).map(Number.prototype.valueOf,0);
  for (let i = 0; i < timesToRun; i++) {
    var result = _.sample(myArray);
    resultsArray[result]++;
  }
  return resultsArray;
})(/*10, 1000*/);

// Option 2
(function(arraySize = 10, timesToRun = 1000){
  let myArray = (new Array(arraySize)).map(Number.call, Number);
  let resultsArray = (new Array(arraySize)).fill(0);
  for (let i = 0; i < timesToRun; i++) {
    var result = _.sample(myArray);
    resultsArray[result]++;
  }
  return resultsArray;
})();