Audit solution branch about js-functions-ins-and-outs HOT 3 OPEN

'use strict';
let count = 0;
const counterFactory = function () {


  return function counter () {
    return count += 1;
  };
};

const isCentimeters = function (value) {
  if (value > 100) {
    return true;
  } else {
    return false;
  }
};

const fromCmToIn = function (value) {
  return value * 0.39;
};

// const fromInToCm = function (value) {
//   return value * 2.54;
// };

const transform = function (values, predicate, mutator) {
  // if the predicate is true, mutate the value, otherwise don't mutate it
  let result = [];

  for (let i = 0; i < values.length; i++) {
    let value = values[i];

    if (predicate(value)) {
      result.push(mutator(value));
    } else {
      result.push(value);
    }
  }

  return result;
};

const addProperty = function addProperty(obj, prop, val) {
  // this function takes an object and adds a property
  // to it

  // let prop = arguments[1];
  // let val = arguments[2];
  // let result = arguments[0];

  obj[prop] = val;
  return obj;
};


const arrayTimes2 = function arrayTimes2() {
  let result = [];

  for (let i = 0; i < arguments[0].length; i++) {
    result[i] = arguments[0][i] * 2;
  }

  return result;
};

//const max = function (arrayOfNumbers) {

const max = function () {
  // takes an arbitrary number of arguments (each arg
  // should be a number), finds the largest one, and
  // returns that member
  //
  // does it take negatives?
  // we need a starting point (maybe the first argument)

  let result = arguments[0][0];

  for (let i = 1; i < arguments[0].length; i++) {
    if (result < arguments[0][i]) {
      result = arguments[0][i];
    }
  }

  return result;

};

const product = function () {
  // multiply two numbers and return the result
  // return a * b;
  // return arguments[0] * arguments[1];
  // return arguments[0] * arguments[1] * arguments[2];
  let result = 1;

  for (let i = 0; i < arguments.length; i++) {
    //result = result * args...
    result = result * arguments[i];
  }

  return result;
};