Achievement

Defining Routes

Practice Sinatra Basics

Achievement

Ordering, Limiting and Paging Results

Reporting with SQL

Achievement

Creating and Modifying Database Tables

Creating and Modifying Database Tables

Achievement

Practice Updating Resources

Practice Ruby on Rails Basics

Achievement

Practice CRUD Operations

Practice Ruby on Rails Basics

Achievement

Practice Creating Scaffolds

Practice Ruby on Rails Basics

Achievement

Ruby Standard Library: Part 2

Ruby Core and Standard Library

Achievement

Ruby Standard Library: Part 1

Ruby Core and Standard Library

Achievement

Ruby Core

Ruby Core and Standard Library

Achievement

Store Inventory Using Modules

Ruby Modules

Achievement

Include and Extend

Ruby Modules

Achievement

Ruby Core Modules

Ruby Modules

Achievement

Ruby Module Basics

Ruby Modules

Achievement

Input and Output

Build an Address Book in Ruby

Achievement

Search

Build an Address Book in Ruby

Achievement

Ruby Class Design

Build an Address Book in Ruby

Achievement

Blocks Practice

Ruby Blocks

Achievement

Working With Blocks

Ruby Blocks

Achievement

Ruby Blocks

Ruby Blocks

Achievement

AR Extensions

ActiveRecord Basics

Achievement

Callbacks

ActiveRecord Basics

Achievement

Query Interface

ActiveRecord Basics

Achievement

Validation

ActiveRecord Basics

Achievement

Migrations and Relationships

ActiveRecord Basics

Achievement

Introduction to ActiveRecord

ActiveRecord Basics

Achievement

More Association Options

Active Record Associations in Rails

Achievement

Using Associations in Your App

Active Record Associations in Rails

Achievement

Active Record Associations

Active Record Associations in Rails

Achievement

Subqueries

Querying Relational Databases

Achievement

Set Operations

Querying Relational Databases

Achievement

Joining Table Data with SQL

Querying Relational Databases

Achievement

Table Relationships

Querying Relational Databases

Achievement

Database Keys

Querying Relational Databases

Achievement

Database Normalization

Querying Relational Databases

Achievement

Handling Errors When Manipulating Data

Modifying Data with SQL

Achievement

Deleting Data from a Database

Modifying Data with SQL

Achievement

Updating Data in a Database

Modifying Data with SQL

Achievement

Adding Data to a Database

Modifying Data with SQL

Achievement

Finding the Data You Want

SQL Basics

Achievement

Getting Data from a Database

SQL Basics

Achievement

Data, Databases and SQL

SQL Basics

Achievement

Gems In Depth

Ruby Gems

Achievement

Ruby Gems

Ruby Gems

Achievement

A Route to a Delete Action

Rails Routes and Resources

Achievement

Routes to Update Actions

Rails Routes and Resources

Achievement

Routes for Create Actions

Rails Routes and Resources

Achievement

A Route to a Read Action

Rails Routes and Resources

Achievement

Rails Resource Index

Rails Routes and Resources

Achievement

Adding a Model Attribute

Ruby on Rails 5 Basics

Achievement

Using the Rails Console

Ruby on Rails 5 Basics

Achievement

Handling Rails Requests

Ruby on Rails 5 Basics

Achievement

Creating Rails Apps

Ruby on Rails 5 Basics

Achievement

Sinatra Finishing Touches

Building Web Apps with Sinatra

Achievement

AJAX and APIs

AJAX Basics (retiring)

Achievement

jQuery and AJAX

AJAX Basics (retiring)

Achievement

Programming AJAX

AJAX Basics (retiring)

Achievement

AJAX Concepts

AJAX Basics (retiring)

Achievement

Using a jQuery Carousel

Using jQuery Plugins

Achievement

Add a Sticky Navigation Bar

Using jQuery Plugins

Achievement

Introducing jQuery Plugins

Using jQuery Plugins

Achievement

Traversing the DOM

JavaScript and the DOM (Retiring)

Achievement

Responding to User Interaction

Interacting with the DOM

Achievement

Making Changes to the DOM

JavaScript and the DOM (Retiring)

Achievement

Getting a Handle on the DOM

JavaScript and the DOM (Retiring)

Achievement

The Browser Environment

JavaScript and the DOM (Retiring)

Achievement

Working with jQuery Collections (2017)

jQuery Basics

Achievement

Understanding jQuery Events and DOM Traversal (2017)

jQuery Basics

Achievement

Introducing jQuery (2017)

jQuery Basics

Achievement

Updating Data in Sinatra

Building Web Apps with Sinatra

Achievement

Adding New Data in Sinatra

Building Web Apps with Sinatra

Achievement

Sinatra ERB Templates

Building Web Apps with Sinatra

Achievement

Creating New Sinatra Apps

Building Web Apps with Sinatra

Achievement

Build a Bank Account Class

Ruby Objects and Classes

Achievement

Ruby Variables and Methods

Ruby Objects and Classes

Achievement

Ruby Objects and Classes

Ruby Objects and Classes

Achievement

Build a Simple Contact List

Ruby Loops

Achievement

Ruby Iteration

Ruby Loops

Achievement

Ruby Loops

Ruby Loops

Achievement

Build a Grocery List Program

Ruby Collections

Achievement

Ruby Hashes

Ruby Collections

Achievement

Ruby Arrays

Ruby Collections

Achievement

Ruby Conditionals

Ruby Basics

Achievement

Ruby Numeric Types

Ruby Basics

Achievement

Ruby Objects

Ruby Basics

Achievement

Ruby Strings and Escape Sequences

Ruby Basics

Achievement

Ruby Syntax

Ruby Basics

Achievement

Callbacks with Timers

Callback Functions in JavaScript

Achievement

Introduction to Callback Functions

Callback Functions in JavaScript

Achievement

AWS and "The Cloud"

AWS with S3

Achievement

JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achievement

JavaScript Loops

JavaScript Loops, Arrays and Objects

Achievement

JavaScript Functions

JavaScript Basics (Retired)

Achievement

JavaScript Conditional Statements

JavaScript Basics (Retired)

Achievement

JavaScript Numbers

JavaScript Basics (Retired)

Achievement

JavaScript Variables

JavaScript Basics (Retired)

Achievement

Introducing JavaScript

JavaScript Basics (Retired)

Achievement

What Is Testing?

Python Testing

Achievement

Gettin' CRUD-y With It

Using Databases in Python

Achievement

Our Diary App

Using Databases in Python

Achievement

Meet Peewee

Using Databases in Python

Achievement

Python Regular Expressions

Regular Expressions in Python

Achievement

Timezones

Dates and Times in Python

Achievement

Math Quiz App

Dates and Times in Python

Achievement

Dates and Times

Dates and Times in Python

Achievement

Buggy Logs

Write Better Python

Achievement

Cleaner Code

Write Better Python

Achievement

Hack-n-Slash

Object-Oriented Python (retired)

Achievement

Python Inheritance

Object-Oriented Python (retired)

Achievement

Python Objects

Object-Oriented Python (retired)

Achievement

Dungeon Game

Python Collections (Retired)

Achievement

Tuples

Python Collections (Retired)

Achievement

Dictionaries

Python Collections (Retired)

Achievement

Slices

Python Collections (Retired)

Achievement

Lists Redux

Python Collections (Retired)

Achievement

Letter Game App

Python Basics (2015)

Achievement

Number Game App

Python Basics (2015)

Achievement

Shopping List App

Python Basics (2015)

Achievement

Logic in Python

Python Basics (2015)

Achievement

Python Data Types

Python Basics (2015)

Achievement

Python For Beginners

Python Basics (2015)

Achievement

Data Retreiver

C# Streams and Data Processing

Achievement

Serialized!

C# Streams and Data Processing

Achievement

System.Object

Intermediate C#

Achievement

Installing Programs

Console Foundations

Achievement

Environment and Redirection

Console Foundations

Achievement

Console Processes

Console Foundations

Achievement

Console Users and Permission

Console Foundations

Achievement

Moving Around in the Console

Console Foundations

Achievement

Website Basics

Website Basics

Achievement

Getting the REST You Need

REST API Basics

Achievement

GET and POST Requests in a Browser

HTTP Basics

Achievement

Introduction to HTTP

HTTP Basics

Achievement

Adding a List Page

ASP.NET MVC Basics

Achievement

Modeling and Presenting Data

ASP.NET MVC Basics

Achievement

Views

ASP.NET MVC Basics

Achievement

Controllers

ASP.NET MVC Basics

Achievement

Project Setup

ASP.NET MVC Basics

Achievement

The Box Model

CSS Basics (2014)

Achievement

Understanding Values and Units

CSS Basics (2014)

Achievement

Basic Selectors

CSS Basics (2014)

Achievement

Getting Started with CSS

CSS Basics (2014)

Achievement

Creating HTML Content

How to Make a Website

Achievement

HTML First

How to Make a Website

Achievement

Beginning HTML and CSS

How to Make a Website

Achievement

Welcome to the Treehouse Club

Treehouse Club: HTML

Achievement

Adding a New Web Page

Introduction to HTML and CSS

Achievement

Make It Beautiful with CSS

Introduction to HTML and CSS

Achievement

HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS

Achievement

Getting Familiar with HTML and CSS

Introduction to HTML and CSS

Achievement

Loops and Final Touches

C# Objects

Achievement

Data Parser

C# Streams and Data Processing

Achievement

Data Reader

C# Streams and Data Processing

Achievement

Now You're Querying!

Querying With LINQ

Achievement

Abstraction

Intermediate C#

Achievement

Polymorphism

Intermediate C#

Achievement

Encapsulation with Properties

C# Objects

Achievement

Encapsulation and Arrays

C# Objects

Achievement

Inheritance

C# Objects

Achievement

Methods

C# Objects

Achievement

Object-Oriented Programming

C# Objects

Achievement

Perfect

C# Basics (Retired)

Achievement

Perform

C# Basics (Retired)

Achievement

Console I/O

C# Basics (Retired)

Achievement

Prepare and Plan

C# Basics (Retired)

Achievement

Basic Android Programming

Build a Simple Android App

Achievement

Creating the Screen Layout

Build a Simple Android App

Achievement

Getting Started with Android

Build a Simple Android App

Achievement

Newbie