Charles Harpke

Charles Harpke

Eagan, MN

Interested in coding front end applications.

33,985

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Skills & Experience

  • Looking for work

    Yes

399 Achievements

  • Common Attacks and Defenses
  • Hello Internet!
  • AWS and "The Cloud"
  • Why React Native
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Migrating a SQLite Database
  • Finishing the Game
  • Introducing JavaScript
  • CRUD Operations with SQLite
  • When To Use What Type of Chart
  • Introduction To Data Visualization
  • Big Data at Netflix
  • Where and How Big Data Is Used
  • What is Big Data
  • Getting Started With HTML
  • Using SQLite for Structured Data
  • Key-Value Saving with SharedPreferences
  • File Storage
  • Introduction to Data Persistence
  • Activity Transitions: Advanced Topics
  • Shared Element Transitions
  • Transitions Framework
  • Principles
  • Python Sets
  • Python Tuples
  • Python Dictionaries
  • Python Slices
  • Python Lists
  • Scrum Artifacts
  • Scrum Events
  • Introducing Scrum
  • What is Agile?
  • Harnessing the Power of Objects
  • Joining Table Data with SQL
  • Table Relationships
  • Database Keys
  • Database Normalization
  • Designing Characters and a Scene
  • Introduction to Game Design
  • Date and Time Functions
  • Aggregate and Numeric Functions
  • Meet Objects
  • Working with Text
  • Ordering, Limiting and Paging Results
  • Animation Basics
  • The Browser Environment
  • Tablet Time
  • Ingredients and Directions
  • Managing Fragments
  • Introducing Fragments
  • The Project
  • Introducing SharedPreferences
  • The Activity Lifecycle
  • Testing and Debugging
  • Improving Our Code
  • Basic Android Programming
  • Creating the Screen Layout
  • Getting Started with Android
  • Get Involved in Open Source
  •  Create a Web Presence on GitHub
  •  Working on a Team
  • Working By Yourself
  • The Lambda Lambada
  • Functional Workhorses
  • Functional Rules
  • Covering Your Bases
  • Be Assertive!
  • What Is Testing?
  • Gettin' CRUD-y With It
  • Our Diary App
  • Methods
  • Object-Oriented Programming
  • Meet Peewee
  • Letter Game App
  • Bells and Whistles
  • 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
  • Diving into Web Development
  • Getting Familiar with HTML and CSS
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • Number Game App
  • Shopping List App
  • Logic in Python
  • Python Data Types
  • Python For Beginners
  • Hello, GitHub!
  • Search
  • Ruby Class Design
  • Gems In Depth
  • Ruby Gems
  • Classes
  • Complex Data Structures
  • An Introduction to Swift Programming
  • Cocoapods
  • Creating Flexible Objects with Protocols
  • Protocols
  • How to Install WordPress on Your Computer
  • Learn About Drupal
  • Finding the Data You Want
  • Getting Data from a Database
  • Data, Databases and SQL
  • Perfect
  • Perform
  • Console I/O
  • Prepare and Plan
  • Function Parameters
  • Functions in Swift 2.0
  • Ruby Booleans
  • Python Regular Expressions
  • Event Planning
  • Build a Pomodoro App
  • Design a Better App
  • Graphical User Interfaces
  • Finishing the Prototype
  • Grid Layout and UI Components
  • Getting to Know Foundation for Apps
  • Introducing jQuery Plugins
  • Build and Share a Unity Game
  • Game Audio
  • Score, Enemies, and Game State
  • Pickups
  • Player Input and Cameras
  • The Unity Editor and Scene Setup
  • The Brand Identity Design Process
  • Introduction to Video Games
  • Introduction to Brand Identity
  • PHP Loops
  • PHP Conditionals
  • PHP Datatypes
  • The Logo Sprint
  • PHP Data & Structure
  • PHP Getting Started
  • Securing and Maintaining a MySQL Database
  • SQL Calculating, Aggregating and Other Functions
  • Joining Relational Data Between Tables in SQL
  • Manipulating Schema with SQL
  • Creating Tables and Manipulating Data with SQL
  • Reading Data from Databases with SQL
  • JavaScript Objects
  • Installing MySQL Server and MySQL Workbench
  • JavaScript Arrays
  • Introduction to Data, Databases and SQL
  • Elements
  • JavaScript Loops
  • Logo Design 101
  • Creating Home Page Assets
  • Applying Effects
  • Advanced Tooling
  • How to Draw in Illustrator
  •  Adding Color and Type
  • Creating an Icon
  • Workflow Basics
  • Slices & Save for Web
  • Vector Shapes
  • Type Tools
  • Masks Basics
  • Layer Basics
  • Workspace Basics
  • Design Foundations Final
  • Becoming a Problem Solver
  • Understanding Aesthetics
  • Introduction to Design
  • Advanced Selectors
  • 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
  • IDE Exploration
  • How it Works
  • Interacting with Google+ APIs
  • Connecting to Play Services
  • Interacting with Your API
  • Adding Play Services to Your App
  • Build a Todo List Application with Rails 4
  • Getting Started With Rails
  • Introduction to Illustrator
  • Basic Selectors
  • WWW
  • Getting Started with CSS
  • Efficiency!
  • Exploring the Java Collections Framework
  • Organizing Data
  • Getting There
  • 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
  • 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
  • Functional Programming in C
  • Fundamentals of C
  • Using Fragments for Tabs
  • Acting on List Item Taps
  • Lists with RecyclerViews
  • Using Parcelable Data
  • Custom ListViews
  • Standard ListViews
  • Updating the Data Model
  • Adding Users Using Parse.com
  • Starting the App
  • Hooking up the Model to the View
  • Building the Weather UI
  • Working with JSON
  • Concurrency and Error Handling
  • Networking
  • Exploring an API
  • Finishing the User Interface
  • The Model-View-Controller Pattern
  • Intents and Multiple Activities
  • User Input
  • Delivering the MVP
  • Creating the MVP
  • Harnessing the Power of Objects
  • Timezones
  • Meet Objects
  • Math Quiz App
  • Dates and Times
  • Buggy Logs
  • Cleaner Code
  • Hack-n-Slash
  • Python Inheritance
  • Python Objects
  • Dungeon Game
  • Tuples
  • Dictionaries
  • Slices
  • Lists Redux
  • Local Python
  • Pick a Number! Any Number!
  • Putting the "Fun" Back in "Functions"
  • Shopping List
  • Things That Count
  • Ins & Outs
  • Say Hello to Python
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Perfecting the Prototype
  • Using your New Tools
  • Getting Started with Java
  • Ruby Logical Operators
  • Ruby Control Structures
  • Ruby Operators
  • AJAX and APIs
  • jQuery and AJAX
  • Programming AJAX
  • AJAX Concepts
  • Views and View Controllers
  • Getting Started with Xcode
  • Swift Optionals
  • Swift Parameters and Tuples
  • Swift Functions
  • Control Flow
  • Collections
  • Operators
  • Types
  • Variables and Constants
  • Publishing on Google Play
  • Using Intents to Display and Share Posts
  • Adapting Data for Display in a List
  • Getting Data from the Web
  • Rebuilding from Scratch
  • Exploring the Master-Detail Template
  • Treehouse Club - JavaScript
  • Grid Layout
  • Using Git for Android
  • Getting Started with Genymotion
  • Getting Started with Android Studio
  • Flexbox Layout
  • Positioning Schemes
  • Float Layout
  • Display Modes
  • Ruby Testing
  • Ruby Procs & Lambdas
  • Traversing and Manipulating the DOM with JavaScript
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • Structuring Tables
  • Table Basics
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Standard Library
  • Testing and Debugging
  • Improving Our Code
  • Ruby Core
  • Coding the Fun Facts
  • Basic Android Programming
  • Ruby Modules
  • Creating the Initial Screen Layout
  • Ruby Blocks
  • Ruby Loops
  • Getting Started with Android
  • Ruby Methods
  • Ruby Hashes
  • Ruby Arrays
  • Ruby Numbers
  • Ruby Strings
  • Objects, Classes, and Variables
  • Ruby Basics
  • Installing a Ruby Development Environment
  • Ruby Methods
  • Ruby Numbers (Ruby Basics)
  • Ruby Strings (Ruby Basics)
  • How Ruby Works
  • Advanced Sass Concepts
  • Speeding up Workflow With Sass
  • Variables, Mixins, and Extending Selectors
  • Getting Started with Sass
  • 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
  • Moving Around in the Console
  • Chrome DevTools Basics
  • Web Apps
  • Websites
  • Introduction
  • 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 Functions
  • JavaScript Arrays
  • JavaScript Numbers
  • JavaScript Strings
  • Introduction Variables
  • Functions
  • Objects and Arrays
  • Control Structures
  • Media Queries
  • CSS Animations
  • Transitions and Transforms
  • Flexbox and Multi-Column Layout
  • Gradients
  • Web Typography
  • Backgrounds and Borders
  • Basics
  • CSS Box Model
  • Text, Fonts, and Lists
  • Values and Units
  • Advanced Selectors
  • Selectors
  • Getting Started with CSS
  • Forms
  • Tables
  • Objects
  • Links
  • Lists
  • Text
  • Introduction
  • 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