Dennis Parussini
seal-mask

Dennis Parussini

Treehouse Project Reviewer

Cologne, NW, Germany

21,951

Total Points

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Skills & Experience

  • Spoken Languages

    • English
    • German
    • Dutch
  • Looking for work

    Yes

233 Achievements

  • Error Handling and Memory Management
  • Building Standard Library Functions
  • Closure Expressions
  • First Class Functions
  • Error Handling
  • Dynamic Keys and Inheritance
  • Parsing Different JSON Structures
  • Parsing to Non-Primitive Types
  • An Overview of Codable
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Python For Beginners
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • Exploration
  • Discovery
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Getting Started With HTML
  • 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
  • Simple Mobile Interface
  • Exporting Designs
  • Sketch Features
  • Introducing Sketch
  • Customizing Colors and Fonts
  • CSS: Cascading Style Sheets
  • Creating HTML Content
  • HTML First
  • Beginning HTML and CSS
  • Writing Great Swift
  • What is Agile?
  • MVC
  • Notifications
  • KVC and KVO
  • Singletons
  • Two-stage Object Creation
  • Intro to Unit Testing 2
  • Introduction to Unit Testing
  • Decoupling the Data
  • Saving Data with CloudKit
  • Recording a Voice Memo
  • Filtering the Data
  • Saving and Displaying Selfies
  • Adding Metadata to Photos
  • Adding Image Filters
  • Taking a Selfie
  • Paged Scrolling
  • Understanding Scroll Views
  • Deleting and Updating Data
  • Fetching Data Using Fetch Requests
  • Inserting and Saving Data Using a Context
  • Understanding the Core Data Stack
  • Transitions, Gestures and More
  • Show Me the Data
  • Introduction to CollectionViews
  • Objective-C in Action
  • Intermediate Topics in Objective-C
  • The Objective-C Mindset
  • Basic Types, Structures and Syntax
  • Moving from Swift to Objective-C
  • Implementing Maps and Search
  • Obtaining a Location Fix
  • Displaying Data in Table Views
  • Enhancing the Networking Stack
  • URLs and Parameter Encoding
  • Introduction to UITableView
  • Implementing a Forecast Client
  • Protocol Oriented Networking
  • Fetching Data From the Web
  • Modeling Forecast Data
  • Visual Format Language
  • Auto Layout in Code
  • Trait Collections
  • Inequalities, Content and Priorities
  • The Constraint Equation
  • A History Lesson
  • Asynchronous Error Handling
  • Closures in Cocoa Touch
  • Building Standard Library Functions
  • Closure Expressions
  • First Class Functions
  • Generics with Swift 2 - Beyond Basics
  • Generics with Swift 2
  • Adding Sound Effects
  • Refactoring the Model
  • Creating the User Interface Programmatically
  • Creating a Story
  • Navigating Through an Adventure
  • Displaying Additional Views
  • Using the Vending Machine
  • Loading Data From a Resource
  • Modeling An Interface
  • 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
  • Complex Data Structures
  • Memory Management in Swift 2
  • Extensions and Protocols
  • Value Semantics, Type Methods and Inheritance
  • Control Flow with Conditional Statements
  • Control Flow With Loops
  • Swift Dictionaries
  • Introduction to Collections
  • Swift Operators
  • Swift Types
  • An Introduction to Swift Programming
  • Object Initialization in Swift 2
  • Properties in Swift 2
  • Hello, GitHub!
  • Workflows
  • Working With Remote Repositories
  • Merging
  • Branches
  • Getting Started With Git
  • Why Version Control Matters
  • What Are Design Patterns?
  • Installing Programs
  • Environment and Redirection
  • Console Processes
  • Console Users and Permission
  • Moving Around in the Console
  • Creating a Long Term Business
  • Protecting Yourself With Contracts
  • Establishing a Proper Workflow
  • Pricing and Project Proposals
  • Finding Your First Project
  • Starting a Freelance Career
  • Error Handling in Swift 2.0
  • Implementing the Detail View
  • Custom Table View Cells
  • Next Week's Weather
  • How Ruby Works
  • Upgrading Stormy
  • Introduction to Table Views
  • Refreshing the Data
  • Adding Weather Icons
  • Managing Complexity
  • Creating Flexible Objects Using Protocols
  • Swift 2.0 Protocols
  • Interacting With Data From the Web
  • Simple Data Structures
  • Function Parameters
  • Functions in Swift 2.0
  • Objects and Optionals
  • Introduction to Optionals
  • Introduction to Enumerations
  • Data Modeling
  • Cocoapods
  • Closures in iOS
  • Closures and Closure Expressions
  • Functions as First Class Citizens
  • Delegation in iOS
  • Introduction to Delegates
  • Creating Flexible Objects with Protocols
  • Protocols
  • Displaying Our Weather Data
  • Data Modeling With Structures
  • Concurrency
  • Pulling Data From the Web
  • Refactoring Our Code (Swift)
  • Building the Master and Detail Views (Swift)
  • Building a Music Library and Playlists (Swift)
  • Using a Navigation Controller With Segues (Swift)
  • Working With Multiple View Controllers (Swift)
  • Deploying to a Device
  • Debugging Our App
  • Improving Our User Interface
  • Using a Data Model
  • Views and View Controllers
  • Getting Started with Xcode
  • Swift Value vs Reference Types
  • Swift Properties
  • Swift Inheritance
  • Swift Classes and Objects
  • Swift Structs and their Methods
  • Swift Structs
  • Swift Enums and their Methods
  • Swift Enums
  • Swift Optionals
  • Swift Parameters and Tuples
  • Swift Functions
  • Control Flow
  • Collections
  • Operators
  • Types
  • Variables and Constants
  • Actions and Animations
  • Game Loop and Texture Atlas
  • Intro to Sprite Kit
  • Relating Users in Parse.com
  • Using Parse.com as a Backend and Adding Users
  • Designing and Starting the App
  • Viewing a Web Page
  • Adapting Data for Display
  • Getting Data from the Web
  • Rebuilding from Scratch
  • Exploring the Master-Detail Template
  • Testing and Debugging
  • Animate This
  • Designing your App
  • Refactoring into a Model
  • Creating a Data Collection
  • Understanding Views and View Controllers
  • Getting Started (iOS7)
  • Beyond the Basics
  • Advanced Objective-C
  • Foundation Framework
  • Introduction to Objective-C
  • Pointers and Memory
  • Functional Programming in C
  • Fundamentals of C
  • Learning the Language
  • Getting Started with iPhone
  • Newbie