Radosław Olszewski

Radosław Olszewski

Member Since February 10, 2016

244 Achievements

  • Meet Python
  • Modeling an Interface
  • Error Handling
  • Creating Flexible Objects Using Protocols
  • Protocol Basics
  • Objects and Optionals
  • Introduction to Optionals
  • Introduction to Enumerations
  • Running Apps on a Device
  • Improving Our User Interface
  • Structs As Data Models
  • View Controllers and Views
  • Getting Started with iOS Development
  • Differentiating Between Objects
  • Class Inheritance
  • Classes in Swift
  • Complex Data Structures
  • JavaScript Arrays and Loops
  • JavaScript Functions
  • Adding Power to Functions
  • Functions in Swift
  • Control Flow With Conditional Statements
  • Control Flow With Loops
  • Dictionaries in Swift
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • Introduction to Collections
  • JavaScript Frameworks, Libraries, and Developer Roles
  • JavaScript Outside of the Browser
  • Data Types and Variables
  • Swift Operators
  • Swift Types
  • An Introduction to Swift Programming
  • Lists
  • Sets and Dictionaries
  • PHPDB Stage 4: Pagination with LIMITs
  • PHPDB Stage 3: Using Relational Data
  • PHPDB Stage 2: Querying the Database with PHP
  • PHPDB Stage 1: Databases and PHP
  • PHP Email Form Errors
  • PHP Email Forms
  • PHP Inventory
  • PHP Includes
  • PHP Internal Functions
  • PHP Returns & Closures
  • PHP Functions Basics
  • PHP Loops
  • Getting Started with Android
  • PHP Arrays
  • PHP Conditionals
  • PHP on the Web
  • Daily Exercise Program
  • Unit Converter
  • Getting to Know PHP
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Getting Started With HTML
  • Python: Inheritance
  • Python: Instant Objects
  • Python Sets
  • Python Tuples
  • Python Lists
  • Python Slices
  • Letter Game App
  • Number Game App
  • Shopping List App
  • Logic in Python
  • Python Data Types
  • Abstraction
  • System.Object
  • Python For Beginners
  • Polymorphism
  • Working With Collections
  • Understanding MongoDB
  • Getting Started with MongoDB
  • Creating a Simple Server in Node.js
  • Building a Command Line Application
  • Introduction to Node.js
  • Getting a Handle on the DOM
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • The Browser Environment
  • Arrays
  • Exploring the Java Collections Framework
  • Subqueries
  • Organizing Data
  • Getting There
  • DOM Traversal
  • DOM Manipulation
  • Delivering the MVP
  • Events
  • Hello, jQuery!
  • Set Operations
  • Joining Table Data with SQL
  • Table Relationships
  • Database Keys
  • Database Normalization
  • Creating the MVP
  • Harnessing the Power of Objects
  • Query Builder
  • Meet Objects
  • Perfecting the Prototype
  • Using your New Tools
  • Getting Started with Java
  • Query Operators
  • Website Basics
  • Handling Errors When Manipulating Data
  • Deleting Data from a Database
  • Updating Data in a Database
  • Adding Data to a Database
  • Adding a New Web Page
  • Make It Beautiful with CSS
  • HTML: The Structural Foundation of Web Pages and Applications
  • Getting Familiar with HTML and CSS
  • Data Retreiver
  • Getting the REST You Need
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • Serialized!
  • Date and Time Functions
  • Data Parser
  • Aggregate and Numeric Functions
  • Getting Started with Angular
  • Working with Text
  • Data Reader
  • Adding a List Page
  • Ordering, Limiting and Paging Results
  • Finding the Data You Want
  • Modeling and Presenting Data
  • Getting Data from a Database
  • Data, Databases and SQL
  • Views
  • Controllers
  • Project Setup
  • Combine and Minify Assets
  • Optimize Assets
  • Measuring Performance
  • Planning for Performance
  • Workflows
  • Working With Remote Repositories
  • Merging
  • Branches
  • Getting Started With Git
  • Why Version Control Matters
  • Installing Programs
  • Environment and Redirection
  • Console Processes
  • Console Users and Permission
  • Functional!
  • Now You're Querying!
  • Moving Around in the Console
  • Loops and Final Touches
  • Encapsulation with Properties
  • WordPress User Roles
  • Chrome DevTools Basics
  • Encapsulation and Arrays
  • WordPress Plugins
  • WordPress Themes
  • The WordPress Customizer
  • Web Apps
  • Websites
  • Inheritance
  • Managing Media in WordPress
  • Introduction
  • Methods
  • Managing Content in WordPress
  • Quiz Practice Project
  • Prototypal Inheritance
  • Object-Oriented Programming
  • Constructor Functions & Prototypes
  • How to Install WordPress on Your Computer
  • Getting Started with WordPress
  • Perfect
  • Introduction to Methods
  • Perform
  • Console I/O
  • Prepare and Plan
  • Building Forms with Bootstrap
  • Using Bootstrap Components
  • Responsive Layouts with the Bootstrap Grid
  • Getting to Know Bootstrap 4
  • AJAX and APIs
  • jQuery and AJAX
  • Programming AJAX
  • AJAX Concepts
  • Custom Media Players
  • Captioning Video
  • Media Basics
  • Traversing and Manipulating the DOM with JavaScript
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • Structuring Tables
  • Table Basics
  • Creating a Simple Drawing Application
  • Creating a Password Confirmation Form
  • Creating a Mobile Drop Down Menu
  • Creating a Simple Lightbox
  • Creating a Spoiler Revealer
  • Introduction to jQuery
  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • JavaScript Objects
  • JavaScript Arrays
  • JavaScript Loops
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Understanding Flexbox
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Positioning Page Content
  • CSS Layout Project
  • Page Layout with the Float Property
  • Controlling Layout with CSS Display Modes
  • Getting Started with CSS Layout
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • Debugging HTML and CSS Problems
  • Sharing a Website
  • Responsive Web Design and Testing
  • Adding Pages to a Website
  • Styling Web Pages and Navigation
  • Customizing Colors and Fonts
  • CSS: Cascading Style Sheets
  • Creating HTML Content
  • HTML First
  • Beginning HTML and CSS
  • Newbie