Run results for: Bitwise vs Boolean data handling

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3588.0 Safari/537.36

Browser: Chrome 72

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Bitwise	65.2 Ops/sec
Boolean	47.5 Ops/sec

Script Preparation code:

function CompletedCourses() {
    

    this.init = function() {
        this._state = new Array(COURSES.length).fill(false);
    }

    this.completeCourse = function(index) {
        this._state[index] = true;
    }


    this.getCompletedCourses = function() {
        const completedCourses = COURSES.filter((course, index) => this._state[index]);
        return completedCourses;
    }	
  this.init();
  	return this;
}

function CompletedCoursesBits() {
    
	
    
    this.initBits = function() {
        // using bits
        this._status = 0;
    }

    this.completeCourseBit = function(index) {
        this._status = this._status | 1 << index;
    }

    this.getCompletedCoursesByBits = function() {
        const completedCourseWithBits = COURSES.filter((course, index) => (this._status & 1 << index));
        return completedCourseWithBits;
    }
    this.initBits();
  return this;
}

function Student(name, completedCourses) {
    this.name = name;
    this.courses = completedCourses;
}

var COURSES = [
    'English',
    'Chemistry',
    'Physics',
    'Literature',
    'Arts',
    'Algabra',
    'Infi',
    'Algorithms',
    'DataStructures',
    'Complexity'
];

var n = 10000;

Tests:

Bitwise
function startBits() { // create const students = []; for (let i = 0; i < n; i++) { students.push(new Student('Mike', new CompletedCoursesBits())); } for (let i = 0; i < n; i++) { const student = students[i]; COURSES.forEach((course, index) => index & 1 ? student.courses.completeCourseBit(index) : '') } // log const list = []; for (let i = 0; i < n; i++) { const student = students[i]; list.push(student.courses.getCompletedCoursesByBits()); } } startBits();
Boolean
function start(){ // create const students = []; for (let i = 0; i < n; i++) { students.push(new Student('Mike', new CompletedCourses())); } // populate for (let i = 0; i < n; i++) { const student = students[i]; COURSES.forEach((course, index) => index & 1 ? student.courses.completeCourse(index) : '') } // log const list = []; for (let i = 0; i < n; i++) { const student = students[i]; list.push(student.courses.getCompletedCourses()); } } start();