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Marc Roelofs

Courses Plus Student

Zoetermeer

16,770

Total Points

•
1,680

CSS

1680 pts
Achievements

0 pts
Forum
•
1,360

HTML

1360 pts
Achievements

0 pts
Forum
•
1,353

JavaScript

1353 pts
Achievements

0 pts
Forum
•
1,147

Python

1147 pts
Achievements

0 pts
Forum
•
810

Design

810 pts
Achievements

0 pts
Forum
•
330

Ruby

330 pts
Achievements

0 pts
Forum
•
18

Development Tools

18 pts
Achievements

0 pts
Forum
•
13

PHP

13 pts
Achievements

0 pts
Forum
•
6

Business

6 pts
Achievements

0 pts
Forum

Points are earned whenever you take an important action on Treehouse.
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Skills & Experience

Spoken Languages
- English
- Dutch
- Italian

201 Achievements

Achievement
Python: Instant Objects

Object-Oriented Python

Achieved
Sep 24, 2018
Achievement
Using the Delegate Pattern in iOS

Delegation in iOS

Achieved
Sep 3, 2018
Achievement
The Delegate Pattern

Delegation in iOS

Achieved
Sep 3, 2018
Achievement
Writing Great Swift

API Design Guidelines in Swift

Achieved
Aug 28, 2018
Achievement
Access Control

Intermediate Swift

Achieved
May 29, 2018
Achievement
Memory Management in Swift

Intermediate Swift

Achieved
May 29, 2018
Achievement
Extensions and Protocols

Intermediate Swift

Achieved
May 21, 2018
Achievement
Value Semantics, Type Methods and Inheritance

Intermediate Swift

Achieved
May 20, 2018
Achievement
Object Initialization

Intermediate Swift

Achieved
May 20, 2018
Achievement
Python Tuples

Python Collections (2016, retired 2019)

Achieved
May 7, 2018
Achievement
Python Dictionaries

Python Collections (2016, retired 2019)

Achieved
May 3, 2018
Achievement
Python Slices

Python Collections (2016, retired 2019)

Achieved
May 1, 2018
Achievement
Python Lists

Python Collections (2016, retired 2019)

Achieved
Apr 30, 2018
Achievement
Properties

Intermediate Swift

Achieved
Apr 20, 2018
Achievement
Letter Game App

Python Basics (2015)

Achieved
Dec 25, 2017
Achievement
Number Game App

Python Basics (2015)

Achieved
Dec 22, 2017
Achievement
Shopping List App

Python Basics (2015)

Achieved
Dec 17, 2017
Achievement
Logic in Python

Python Basics (2015)

Achieved
Dec 11, 2017
Achievement
Python Data Types

Python Basics (2015)

Achieved
Dec 7, 2017
Achievement
Python For Beginners

Python Basics (2015)

Achieved
Dec 4, 2017
Achievement
Displaying Additional Views

Build a Vending Machine App in Swift

Achieved
Mar 31, 2017
Achievement
Using the Vending Machine

Build a Vending Machine App in Swift

Achieved
Mar 28, 2017
Achievement
Loading Data From a Resource

Build a Vending Machine App in Swift

Achieved
Mar 26, 2017
Achievement
Modeling an Interface

Build a Vending Machine App in Swift

Achieved
Mar 26, 2017
Achievement
Error Handling

Error Handling in Swift

Achieved
Mar 25, 2017
Achievement
Creating Flexible Objects Using Protocols

Protocols in Swift

Achieved
Mar 24, 2017
Achievement
Protocol Basics

Protocols in Swift

Achieved
Mar 23, 2017
Achievement
Objects and Optionals

Enumerations and Optionals in Swift

Achieved
Mar 22, 2017
Achievement
Introduction to Optionals

Enumerations and Optionals in Swift

Achieved
Mar 21, 2017
Achievement
Introduction to Enumerations

Enumerations and Optionals in Swift

Achieved
Mar 20, 2017
Achievement
Running Apps on a Device

Build a Simple iPhone App with Swift

Achieved
Mar 14, 2017
Achievement
Improving Our User Interface

Build a Simple iPhone App with Swift

Achieved
Mar 14, 2017
Achievement
Structs As Data Models

Build a Simple iPhone App with Swift

Achieved
Mar 13, 2017
Achievement
View Controllers and Views

Build a Simple iPhone App with Swift

Achieved
Mar 13, 2017
Achievement
Getting Started with iOS Development

Build a Simple iPhone App with Swift

Achieved
Mar 12, 2017
Achievement
Differentiating Between Objects

Object-Oriented Swift

Achieved
Mar 11, 2017
Achievement
Class Inheritance

Object-Oriented Swift

Achieved
Mar 11, 2017
Achievement
Classes in Swift

Object-Oriented Swift

Achieved
Mar 8, 2017
Achievement
Complex Data Structures

Object-Oriented Swift

Achieved
Mar 8, 2017
Achievement
Adding Power to Functions

Functions in Swift

Achieved
Feb 23, 2017
Achievement
Functions in Swift

Functions in Swift

Achieved
Feb 22, 2017
Achievement
Control Flow With Conditional Statements

Swift Collections and Control Flow

Achieved
Feb 21, 2017
Achievement
Control Flow With Loops

Swift Collections and Control Flow

Achieved
Feb 20, 2017
Achievement
Dictionaries in Swift

Swift Collections and Control Flow

Achieved
Feb 19, 2017
Achievement
Introduction to Collections

Swift Collections and Control Flow

Achieved
Feb 19, 2017
Achievement
Swift Operators

Swift Basics

Achieved
Feb 18, 2017
Achievement
Swift Types

Swift Basics

Achieved
Feb 14, 2017
Achievement
An Introduction to Swift Programming

Swift Basics

Achieved
Feb 11, 2017
Achievement
Creating Flexible Objects Using Protocols

Swift 2.0 Protocols

Achieved
Dec 2, 2016
Achievement
Swift 2.0 Protocols

Swift 2.0 Protocols

Achieved
Nov 20, 2016
Achievement
Objects and Optionals

Swift 2.0 Enumerations and Optionals

Achieved
Nov 19, 2016
Achievement
Introduction to Optionals

Swift 2.0 Enumerations and Optionals

Achieved
Aug 24, 2016
Achievement
Introduction to Enumerations

Swift 2.0 Enumerations and Optionals

Achieved
Aug 23, 2016
Achievement
Running Apps on a Device

Build a Simple iPhone App with Swift 2.0

Achieved
Jul 16, 2016
Achievement
Improving Our User Interface

Build a Simple iPhone App with Swift 2.0

Achieved
Jul 16, 2016
Achievement
Structs as Data Models

Build a Simple iPhone App with Swift 2.0

Achieved
Jul 15, 2016
Achievement
View Controllers and Views

Build a Simple iPhone App with Swift 2.0

Achieved
Jul 15, 2016
Achievement
Getting Started with iOS Development

Build a Simple iPhone App with Swift 2.0

Achieved
Jul 15, 2016
Achievement
Differentiating Between Objects

Object-Oriented Swift 2.0

Achieved
Jul 12, 2016
Achievement
Class Inheritance

Object-Oriented Swift 2.0

Achieved
Jul 12, 2016
Achievement
Classes

Object-Oriented Swift 2.0

Achieved
Jul 10, 2016
Achievement
Complex Data Structures

Object-Oriented Swift 2.0

Achieved
Jul 10, 2016
Achievement
Function Parameters

Swift 2.0 Functions

Achieved
Jul 7, 2016
Achievement
Functions in Swift 2.0

Swift 2.0 Functions

Achieved
Jul 5, 2016
Achievement
Control Flow with Conditional Statements

Swift 2.0 Collections and Control Flow

Achieved
Jul 5, 2016
Achievement
Control Flow With Loops

Swift 2.0 Collections and Control Flow

Achieved
Jun 26, 2016
Achievement
Swift Dictionaries

Swift 2.0 Collections and Control Flow

Achieved
Jun 18, 2016
Achievement
Introduction to Collections

Swift 2.0 Collections and Control Flow

Achieved
Jun 16, 2016
Achievement
Swift Operators

Swift 2.0 Basics

Achieved
Jun 15, 2016
Achievement
Swift Types

Swift 2.0 Basics

Achieved
Jun 14, 2016
Achievement
An Introduction to Swift Programming

Swift 2.0 Basics

Achieved
Jun 14, 2016
Achievement
Working With Multiple View Controllers (Swift)

Build a Playlist Browser with Swift

Achieved
Sep 6, 2015
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
Aug 19, 2015
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
Aug 19, 2015
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Aug 19, 2015
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Aug 18, 2015
Achievement
Creating HTML Content

How to Make a Website

Achieved
Jun 3, 2015
Achievement
HTML First

How to Make a Website

Achieved
Jun 3, 2015
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Jun 3, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
May 28, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
May 26, 2015
Achievement
Swift Value vs Reference Types

Object-Oriented Swift

Achieved
May 8, 2015
Achievement
Simple Mobile Interface

Sketch Basics

Achieved
Mar 18, 2015
Achievement
Exporting Designs

Sketch Basics

Achieved
Mar 16, 2015
Achievement
Sketch Features

Sketch Basics

Achieved
Mar 16, 2015
Achievement
Introducing Sketch

Sketch Basics

Achieved
Mar 12, 2015
Achievement
Swift Properties

Object-Oriented Swift

Achieved
Feb 1, 2015
Achievement
Swift Inheritance

Object-Oriented Swift

Achieved
Jan 22, 2015
Achievement
Swift Classes and Objects

Object-Oriented Swift

Achieved
Jan 12, 2015
Achievement
Swift Structs and their Methods

Swift Enums and Structs

Achieved
Dec 14, 2014
Achievement
Swift Structs

Swift Enums and Structs

Achieved
Dec 12, 2014
Achievement
Swift Enums and their Methods

Swift Enums and Structs

Achieved
Dec 12, 2014
Achievement
Swift Enums

Swift Enums and Structs

Achieved
Dec 12, 2014
Achievement
Working with a Developer

Mobile App Design for iOS

Achieved
Oct 26, 2014
Achievement
Designing our App

Mobile App Design for iOS

Achieved
Oct 26, 2014
Achievement
Wireframing, Interaction Design and Planning

Mobile App Design for iOS

Achieved
Oct 26, 2014
Achievement
ADS Writing and Preparation

Mobile App Design for iOS

Achieved
Oct 20, 2014
Achievement
Introduction to UI Design

Mobile App Design for iOS

Achieved
Oct 20, 2014
Achievement
Displaying Our Weather Data

Build a Weather App with Swift (Retired)

Achieved
Oct 15, 2014
Achievement
Data Modeling With Structures

Build a Weather App with Swift (Retired)

Achieved
Oct 14, 2014
Achievement
Concurrency

Build a Weather App with Swift (Retired)

Achieved
Oct 14, 2014
Achievement
Pulling Data From the Web

Build a Weather App with Swift (Retired)

Achieved
Oct 13, 2014
Achievement
Deploying to a Device

Build a Simple iPhone App with Swift

Achieved
Oct 13, 2014
Achievement
Debugging Our App

Build a Simple iPhone App with Swift

Achieved
Oct 8, 2014
Achievement
Improving Our User Interface

Build a Simple iPhone App with Swift

Achieved
Oct 7, 2014
Achievement
Using a Data Model

Build a Simple iPhone App with Swift

Achieved
Oct 7, 2014
Achievement
Views and View Controllers

Build a Simple iPhone App with Swift

Achieved
Sep 23, 2014
Achievement
Getting Started with Xcode

Build a Simple iPhone App with Swift

Achieved
Sep 23, 2014
Achievement
Swift Optionals

Swift Functions and Optionals

Achieved
Sep 23, 2014
Achievement
Swift Parameters and Tuples

Swift Functions and Optionals

Achieved
Sep 23, 2014
Achievement
Swift Functions

Swift Functions and Optionals

Achieved
Sep 23, 2014
Achievement
Control Flow

Swift Basics (retired)

Achieved
Sep 23, 2014
Achievement
Collections

Swift Basics (retired)

Achieved
Sep 22, 2014
Achievement
Operators

Swift Basics (retired)

Achieved
Sep 21, 2014
Achievement
Types

Swift Basics (retired)

Achieved
Sep 21, 2014
Achievement
Variables and Constants

Swift Basics (retired)

Achieved
Sep 21, 2014
Achievement
Relating Users in Parse.com

Build a Self-Destructing Message iPhone App

Achieved
Sep 10, 2014
Achievement
Using Parse.com as a Backend and Adding Users

Build a Self-Destructing Message iPhone App

Achieved
Sep 7, 2014
Achievement
Designing and Starting the App

Build a Self-Destructing Message iPhone App

Achieved
Sep 4, 2014
Achievement
Viewing a Web Page

Build a Blog Reader iPhone App

Achieved
Sep 2, 2014
Achievement
Adapting Data for Display

Build a Blog Reader iPhone App

Achieved
Sep 1, 2014
Achievement
Data Modeling

Build a Blog Reader iPhone App

Achieved
Aug 26, 2014
Achievement
Getting Data from the Web

Build a Blog Reader iPhone App

Achieved
Aug 26, 2014
Achievement
Rebuilding from Scratch

Build a Blog Reader iPhone App

Achieved
Aug 25, 2014
Achievement
Exploring the Master-Detail Template

Build a Blog Reader iPhone App

Achieved
Aug 22, 2014
Achievement
How Ruby Works

Ruby Basics (Retired)

Achieved
Aug 12, 2014
Achievement
Testing and Debugging

Build a Simple iPhone App (iOS7)

Achieved
Jul 11, 2014
Achievement
Animate This (iOS7)

Build a Simple iPhone App (iOS7)

Achieved
Jul 11, 2014
Achievement
Designing your App

Build a Simple iPhone App (iOS7)

Achieved
Jul 6, 2014
Achievement
Refactoring into a Model

Build a Simple iPhone App (iOS7)

Achieved
Jul 5, 2014
Achievement
Creating a Data Collection

Build a Simple iPhone App (iOS7)

Achieved
Jul 5, 2014
Achievement
Understanding Views and View Controllers

Build a Simple iPhone App (iOS7)

Achieved
Jul 5, 2014
Achievement
Getting Started (iOS7)

Build a Simple iPhone App (iOS7)

Achieved
Jul 4, 2014
Achievement
Beyond the Basics

Objective-C Basics (Retired)

Achieved
Jun 22, 2014
Achievement
Advanced Objective-C

Objective-C Basics (Retired)

Achieved
Jun 22, 2014
Achievement
Foundation Framework

Objective-C Basics (Retired)

Achieved
Jun 22, 2014
Achievement
Introduction to Objective-C

Objective-C Basics (Retired)

Achieved
Jun 22, 2014
Achievement
Pointers and Memory

Objective-C Basics (Retired)

Achieved
Jun 21, 2014
Achievement
Functional Programming in C

Objective-C Basics (Retired)

Achieved
Jun 21, 2014
Achievement
Fundamentals of C

Objective-C Basics (Retired)

Achieved
Jun 21, 2014
Achievement
Prototyping With Bootstrap

Framework Basics

Achieved
May 29, 2014
Achievement
Introduction to Front-End Frameworks

Framework Basics

Achieved
May 22, 2014
Achievement
Rails Frontend Development

Build a Simple Ruby on Rails Application

Achieved
Mar 25, 2014
Achievement
Getting Started With Rails

Build a Simple Ruby on Rails Application

Achieved
Mar 23, 2014
Achievement
Installing a Ruby Development Environment

Installing a Ruby Development Environment

Achieved
Mar 23, 2014
Achievement
Web Apps

Accessibility

Achieved
Mar 23, 2014
Achievement
Websites

Accessibility

Achieved
Mar 22, 2014
Achievement
Introduction

Accessibility

Achieved
Mar 20, 2014
Achievement
Customizing Google Maps

Build an Interactive Website

Achieved
Mar 19, 2014
Achievement
Google Maps Integration

Build an Interactive Website

Achieved
Mar 19, 2014
Achievement
jQuery Plugins

Build an Interactive Website

Achieved
Mar 19, 2014
Achievement
Going Mobile

HTML Email Design

Achieved
Mar 16, 2014
Achievement
Designing Email with CSS

HTML Email Design

Achieved
Mar 16, 2014
Achievement
Coding HTML Email

HTML Email Design

Achieved
Mar 16, 2014
Achievement
HTML Email Basics

HTML Email Design

Achieved
Mar 14, 2014
Achievement
Form Validation and Manipulation

Build an Interactive Website

Achieved
Mar 14, 2014
Achievement
Introduction to jQuery

Build an Interactive Website

Achieved
Mar 12, 2014
Achievement
JavaScript Objects

JavaScript Foundations

Achieved
Mar 12, 2014
Achievement
JavaScript Functions

JavaScript Foundations

Achieved
Mar 11, 2014
Achievement
JavaScript Arrays

JavaScript Foundations

Achieved
Mar 10, 2014
Achievement
JavaScript Numbers

JavaScript Foundations

Achieved
Mar 9, 2014
Achievement
JavaScript Strings

JavaScript Foundations

Achieved
Mar 5, 2014
Achievement
Introduction Variables

JavaScript Foundations

Achieved
Mar 4, 2014
Achievement
Functions

Introduction to Programming

Achieved
Mar 4, 2014
Achievement
Objects and Arrays

Introduction to Programming

Achieved
Mar 4, 2014
Achievement
Control Structures

Introduction to Programming

Achieved
Mar 4, 2014
Achievement
Basics

Introduction to Programming

Achieved
Mar 4, 2014
Achievement
Advanced Techniques

Build a Responsive Website

Achieved
Mar 3, 2014
Achievement
Responsive Design

Build a Responsive Website

Achieved
Mar 3, 2014
Achievement
Adaptive Design

Build a Responsive Website

Achieved
Mar 3, 2014
Achievement
Fluid Foundation

Build a Responsive Website

Achieved
Mar 3, 2014
Achievement
Introduction to Responsive Web Design

Build a Responsive Website

Achieved
Mar 3, 2014
Achievement
Media Queries

Unused CSS Stages

Achieved
Mar 3, 2014
Achievement
CSS Animations

Unused CSS Stages

Achieved
Mar 1, 2014
Achievement
Transitions and Transforms

Unused CSS Stages

Achieved
Mar 1, 2014
Achievement
Flexbox and Multi-Column Layout

Unused CSS Stages

Achieved
Feb 27, 2014
Achievement
Gradients

CSS Foundations

Achieved
Feb 27, 2014
Achievement
Web Typography

CSS Foundations

Achieved
Feb 25, 2014
Achievement
Backgrounds and Borders

CSS Foundations

Achieved
Feb 22, 2014
Achievement
CSS Box Model

CSS Foundations

Achieved
Feb 19, 2014
Achievement
Text, Fonts, and Lists

CSS Foundations

Achieved
Feb 18, 2014
Achievement
Values and Units

CSS Foundations

Achieved
Feb 16, 2014
Achievement
Advanced Selectors

CSS Foundations

Achieved
Feb 16, 2014
Achievement
Selectors

CSS Foundations

Achieved
Feb 16, 2014
Achievement
Getting Started with CSS

CSS Foundations

Achieved
Feb 15, 2014
Achievement
Forms

HTML

Achieved
Feb 14, 2014
Achievement
Tables

HTML

Achieved
Feb 14, 2014
Achievement
Objects

HTML

Achieved
Feb 14, 2014
Achievement
Links

HTML

Achieved
Feb 14, 2014
Achievement
Lists

HTML

Achieved
Feb 14, 2014
Achievement
Text

HTML

Achieved
Feb 14, 2014
Achievement
Introduction

HTML

Achieved
Feb 14, 2014
Achievement
Launching the Website

Build a Simple Website

Achieved
Feb 12, 2014
Achievement
Styling Content

Build a Simple Website

Achieved
Feb 12, 2014
Achievement
Creating a Website Structure

Build a Simple Website

Achieved
Feb 9, 2014
Achievement
Text Editors and HTML

Build a Simple Website

Achieved
Feb 9, 2014
Achievement
Website Basics

Build a Simple Website

Achieved
Feb 9, 2014
Achievement
Color Theory

Aesthetic Foundations

Achieved
Feb 9, 2014
Achievement
Principles

Aesthetic Foundations

Achieved
Feb 9, 2014
Achievement
Elements

Aesthetic Foundations

Achieved
Feb 8, 2014
Achievement
Newbie

Achieved
Feb 8, 2014