R TJ

R TJ

London

I am a web/app developer

15,749

Total Points

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Skills & Experience

  • Company

    Ruben Systems

  • Job Title

    CEO

  • Spoken Languages

    • English

195 Achievements

  • Say Hello to Django
  • Dates and Times
  • Python Slices
  • Python Lists
  • Build an Application
  • Using Lists
  • Writing a Classifier
  • Machine Learning Vocabulary
  • Introduction to Machine Learning
  • Requesting Real Data
  • Enhancing the iTunes Endpoint
  • URLs and Parameter Encoding
  • Building the User Interface
  • Modeling iTunes Search Results
  • Decoupling the Data Source
  • Sorting Contacts Into Sections
  • Static Table Views for Detail Interfaces
  • Displaying Contact Data
  • A High Level Overview
  • Dark Sky API Client
  • Downloading JSON Data Asynchronously
  • Fetching Data From the Web
  • Modeling Forecast Data
  • Error Handling and Memory Management
  • Building Standard Library Functions
  • Closure Expressions
  • First Class Functions
  • Generics and Protocols
  • Generic Types
  • Generic Functions, Parameters and Constraints
  • Adding Sound Effects
  • Personalizing The Story
  • Refactoring Our Code
  • Creating the User Interface Programmatically
  • Creating a Story
  • Navigating Through An Adventure
  • Using the Delegate Pattern in iOS
  • The Delegate Pattern
  • Access Control
  • Memory Management in Swift
  • Extensions and Protocols
  • Value Semantics, Type Methods and Inheritance
  • Object Initialization
  • Properties
  • Displaying Additional Views
  • Using the Vending Machine
  • Loading Data From a Resource
  • 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
  • Handling Errors When Manipulating Data
  • Deleting Data from a Database
  • Updating Data in a Database
  • Adding Data to a Database
  • PHPDB Stage 2: Querying the Database with PHP
  • PHPDB Stage 1: Databases and PHP
  • Date and Time Functions
  • Aggregate and Numeric Functions
  • Working with Text
  • Ordering, Limiting and Paging Results
  • Finding the Data You Want
  • Getting Data from a Database
  • Data, Databases and SQL
  • PHP Email Form Errors
  • PHP Email Forms
  • PHP Inventory
  • PHP Loops
  • PHP Arrays
  • PHP Conditionals
  • Getting to Know PHP
  • Custom Media Players
  • Captioning Video
  • Media Basics
  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Building a Command Line Application
  • Introduction to Node.js
  • Keyframe and Line Drawing Animations
  • Transitions and Transforms
  • Creating an SVG
  • Introduction to SVG
  • Adding 3D Effects with CSS
  • Getting Started with CSS Transforms
  • Transition Timing Functions and Delays
  • Getting Started with CSS Transitions
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Understanding Flexbox
  • Quiz Practice Project
  • Prototypal Inheritance
  • Constructor Functions & Prototypes
  • The Logo Sprint
  • Logo Design 101
  • Introduction to Design
  • Structuring Tables
  • Table Basics
  • Introduction to Methods
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Choosing Options
  • PHP Includes
  • Organizing Forms
  • Form Basics
  • AJAX and APIs
  • PHP Internal Functions
  • PHP Returns & Closures
  • jQuery and AJAX
  • PHP Functions Basics
  • Programming AJAX
  • PHP Loops
  • PHP Conditionals
  • PHP Datatypes
  • PHP Data & Structure
  • PHP Getting Started
  • AJAX Concepts
  • Controlling Layout with CSS Display Modes
  • Getting Started with CSS Layout
  • Traversing and Manipulating the DOM with JavaScript
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • 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
  • JavaScript Objects
  • JavaScript Arrays
  • JavaScript Loops
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Loading Data From a Resource
  • 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
  • Modeling An Interface
  • Styling Web Pages and Navigation
  • Error Handling in Swift 2.0
  • Customizing Colors and Fonts
  • CSS: Cascading Style Sheets
  • Creating Flexible Objects Using Protocols
  • Swift 2.0 Protocols
  • Objects and Optionals
  • Introduction to Optionals
  • Introduction to Enumerations
  • Python For Beginners
  • 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
  • Introduction to Video Games
  • Complex Data Structures
  • Creating HTML Content
  • HTML First
  • JavaScript Variables
  • Swift Operators
  • Swift Types
  • Function Parameters
  • Introducing JavaScript
  • Functions in Swift 2.0
  • Control Flow with Conditional Statements
  • Control Flow With Loops
  • Swift Dictionaries
  • Introduction to Collections
  • Beginning HTML and CSS
  • An Introduction to Swift Programming
  • Newbie