William Li

Courses Plus Student

San Francisco, CA

Web Developer, moderator of Treehouse community forum.

26,865

Total Points

•
5,597

Python

2919 pts
Achievements

2678 pts
Forum
•
4,931

Ruby

3214 pts
Achievements

1717 pts
Forum
•
3,177

JavaScript

2006 pts
Achievements

1171 pts
Forum
•
1,967

Development Tools

1202 pts
Achievements

765 pts
Forum
•
1,512

HTML

1237 pts
Achievements

275 pts
Forum
•
1,130

CSS

651 pts
Achievements

479 pts
Forum
•
852

Java

166 pts
Achievements

686 pts
Forum
•
638

PHP

285 pts
Achievements

353 pts
Forum
•
372

Digital Literacy

346 pts
Achievements

26 pts
Forum
•
354

C#

126 pts
Achievements

228 pts
Forum
•
245

Design

106 pts
Achievements

139 pts
Forum
•
143

Android

40 pts
Achievements

103 pts
Forum
•
74

Business

61 pts
Achievements

13 pts
Forum
•
10

Databases

10 pts
Achievements

0 pts
Forum
•
2

Go

2 pts
Achievements

0 pts
Forum
•
0

21st Century Skills

0 pts
Achievements

0 pts
Forum
•
0

Equity, Diversity, and Inclusion (EDI)

0 pts
Achievements

0 pts
Forum
•
0

Computer Science

0 pts
Achievements

0 pts
Forum
•
0

Learning Resources

0 pts
Achievements

0 pts
Forum
•
0

Machine Learning

0 pts
Achievements

0 pts
Forum
•
0

Quality Assurance

0 pts
Achievements

0 pts
Forum
•
0

Security

0 pts
Achievements

0 pts
Forum
•
0

APIs

0 pts
Achievements

0 pts
Forum
•
0

Data Analysis

0 pts
Achievements

0 pts
Forum

Points are earned whenever you take an important action on Treehouse.
Learn more about when and how points are earned.

Skills & Experience

Spoken Languages
- English
Looking for work

Yes

171 Achievements

Achievement
Ruby Objects

Ruby Basics

Achieved
May 13, 2018
Achievement
Functional Rules

Functional Python

Achieved
Jan 13, 2017
Achievement
Letter Game App

Python Basics (2015)

Achieved
Jan 13, 2017
Achievement
Shopping List App

Python Basics (2015)

Achieved
Jan 13, 2017
Achievement
Logic in Python

Python Basics (2015)

Achieved
Jan 13, 2017
Achievement
Python Data Types

Python Basics (2015)

Achieved
Jan 13, 2017
Achievement
Python For Beginners

Python Basics (2015)

Achieved
Jan 13, 2017
Achievement
Closure Expressions

Closures in Swift 2

Achieved
Jul 15, 2016
Achievement
Number Game App

Python Basics (2015)

Achieved
Feb 22, 2016
Achievement
Data, Databases and SQL

SQL Basics

Achieved
Dec 17, 2015
Achievement
Ruby Gems

Ruby Gems

Achieved
Nov 26, 2015
Achievement
The Internet

How the Internet Works

Achieved
Nov 26, 2015
Achievement
What is npm?

npm Basics (retiring)

Achieved
Aug 22, 2015
Achievement
Getting Started with Data Science

Data Science Basics

Achieved
Apr 19, 2015
Achievement
Starting a Freelance Career

How to Freelance

Achieved
Apr 7, 2015
Achievement
Introduction to Design

Design Foundations

Achieved
Feb 24, 2015
Achievement
JavaScript Functions

JavaScript Basics (Retired)

Achieved
Feb 24, 2015
Achievement
JavaScript Conditional Statements

JavaScript Basics (Retired)

Achieved
Feb 24, 2015
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Feb 24, 2015
Achievement
JavaScript Loops

JavaScript Loops, Arrays and Objects

Achieved
Feb 20, 2015
Achievement
Structuring Tables

HTML Tables

Achieved
Feb 17, 2015
Achievement
Table Basics

HTML Tables

Achieved
Feb 17, 2015
Achievement
Swift Value vs Reference Types

Object-Oriented Swift

Achieved
Feb 14, 2015
Achievement
Swift Properties

Object-Oriented Swift

Achieved
Feb 13, 2015
Achievement
Computer Languages

Computer Basics

Achieved
Feb 13, 2015
Achievement
Computer Basics

Computer Basics

Achieved
Feb 12, 2015
Achievement
Swift Inheritance

Object-Oriented Swift

Achieved
Feb 12, 2015
Achievement
Swift Classes and Objects

Object-Oriented Swift

Achieved
Feb 12, 2015
Achievement
Swift Structs and their Methods

Swift Enums and Structs

Achieved
Feb 12, 2015
Achievement
Swift Structs

Swift Enums and Structs

Achieved
Feb 12, 2015
Achievement
Swift Enums and their Methods

Swift Enums and Structs

Achieved
Feb 12, 2015
Achievement
Swift Enums

Swift Enums and Structs

Achieved
Feb 12, 2015
Achievement
Introduction to jQuery

jQuery Basics (2014)

Achieved
Feb 10, 2015
Achievement
Swift Optionals

Swift Functions and Optionals

Achieved
Feb 7, 2015
Achievement
Swift Parameters and Tuples

Swift Functions and Optionals

Achieved
Feb 6, 2015
Achievement
Swift Functions

Swift Functions and Optionals

Achieved
Feb 6, 2015
Achievement
Control Flow

Swift Basics (retired)

Achieved
Feb 6, 2015
Achievement
Collections

Swift Basics (retired)

Achieved
Feb 6, 2015
Achievement
Operators

Swift Basics (retired)

Achieved
Feb 5, 2015
Achievement
Types

Swift Basics (retired)

Achieved
Feb 5, 2015
Achievement
Variables and Constants

Swift Basics (retired)

Achieved
Feb 5, 2015
Achievement
Blocks Practice

Ruby Blocks

Achieved
Feb 3, 2015
Achievement
Working With Blocks

Ruby Blocks

Achieved
Feb 3, 2015
Achievement
Ruby Blocks

Ruby Blocks

Achieved
Jan 30, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Jan 27, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Jan 27, 2015
Achievement
Building a Command Line Application

Node.js Basics (2014)

Achieved
Jan 26, 2015
Achievement
JavaScript and the DOM

Interactive Web Pages with JavaScript

Achieved
Jan 19, 2015
Achievement
Views and View Controllers (ObjC)

Build a Simple iPhone App with Objective-C

Achieved
Jan 17, 2015
Achievement
Getting Started with Xcode (ObjC)

Build a Simple iPhone App with Objective-C

Achieved
Jan 15, 2015
Achievement
Ruby Testing

Ruby Foundations

Achieved
Jan 14, 2015
Achievement
Standard Library

Ruby Foundations

Achieved
Jan 14, 2015
Achievement
Ruby Core

Ruby Foundations

Achieved
Jan 14, 2015
Achievement
Ruby Modules

Ruby Foundations

Achieved
Jan 13, 2015
Achievement
Ruby Procs & Lambdas

Ruby Foundations

Achieved
Jan 13, 2015
Achievement
Ruby Blocks

Ruby Foundations

Achieved
Jan 10, 2015
Achievement
Debugging HTML and CSS Problems

How to Make a Website

Achieved
Jan 10, 2015
Achievement
Sharing a Website

How to Make a Website

Achieved
Jan 10, 2015
Achievement
Responsive Web Design and Testing

How to Make a Website

Achieved
Jan 10, 2015
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
Jan 10, 2015
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
Jan 10, 2015
Achievement
Build a Simple Todo List Program

Ruby Booleans

Achieved
Jan 8, 2015
Achievement
Ruby Booleans

Ruby Booleans

Achieved
Jan 8, 2015
Achievement
Build a Simple Contact List

Ruby Loops

Achieved
Jan 8, 2015
Achievement
Ruby Iteration

Ruby Loops

Achieved
Jan 8, 2015
Achievement
Ruby Loops

Ruby Loops

Achieved
Jan 8, 2015
Achievement
Ruby Loops

Ruby Foundations

Achieved
Jan 8, 2015
Achievement
Ruby Methods

Ruby Foundations

Achieved
Jan 8, 2015
Achievement
Ruby Hashes

Ruby Foundations

Achieved
Jan 8, 2015
Achievement
Ruby Arrays

Ruby Foundations

Achieved
Jan 8, 2015
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Jan 7, 2015
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Jan 6, 2015
Achievement
Creating HTML Content

How to Make a Website

Achieved
Jan 6, 2015
Achievement
HTML First

How to Make a Website

Achieved
Jan 5, 2015
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Jan 5, 2015
Achievement
Getting Started With Rails

Build a Simple Ruby on Rails Application

Achieved
Jan 4, 2015
Achievement
Build a Bank Account Class

Ruby Objects and Classes

Achieved
Jan 4, 2015
Achievement
Ruby Variables and Methods

Ruby Objects and Classes

Achieved
Jan 4, 2015
Achievement
Ruby Objects and Classes

Ruby Objects and Classes

Achieved
Jan 4, 2015
Achievement
Build a Grocery List Program

Ruby Collections

Achieved
Jan 4, 2015
Achievement
Ruby Hashes

Ruby Collections

Achieved
Jan 4, 2015
Achievement
Ruby Arrays

Ruby Collections

Achieved
Jan 3, 2015
Achievement
Ruby Logical Operators

Ruby Operators and Control Structures

Achieved
Jan 3, 2015
Achievement
Ruby Control Structures

Ruby Operators and Control Structures

Achieved
Jan 3, 2015
Achievement
Ruby Operators

Ruby Operators and Control Structures

Achieved
Jan 3, 2015
Achievement
Ruby Methods

Ruby Basics (Retired)

Achieved
Jan 3, 2015
Achievement
Ruby Numbers (Ruby Basics)

Ruby Basics (Retired)

Achieved
Jan 3, 2015
Achievement
Ruby Strings (Ruby Basics)

Ruby Basics (Retired)

Achieved
Jan 3, 2015
Achievement
How Ruby Works

Ruby Basics (Retired)

Achieved
Jan 2, 2015
Achievement
Python Regular Expressions

Regular Expressions in Python

Achieved
Jan 2, 2015
Achievement
Timezones

Dates and Times in Python

Achieved
Jan 1, 2015
Achievement
Introduction to Node.js

Node.js Basics (2014)

Achieved
Dec 31, 2014
Achievement
Math Quiz App

Dates and Times in Python

Achieved
Dec 31, 2014
Achievement
Dates and Times

Dates and Times in Python

Achieved
Dec 31, 2014
Achievement
Hack-n-Slash

Object-Oriented Python (retired)

Achieved
Dec 30, 2014
Achievement
Python Inheritance

Object-Oriented Python (retired)

Achieved
Dec 30, 2014
Achievement
Buggy Logs

Write Better Python

Achieved
Dec 29, 2014
Achievement
Cleaner Code

Write Better Python

Achieved
Dec 29, 2014
Achievement
Python Objects

Object-Oriented Python (retired)

Achieved
Dec 24, 2014
Achievement
Dungeon Game

Python Collections (Retired)

Achieved
Dec 24, 2014
Achievement
Tuples

Python Collections (Retired)

Achieved
Dec 24, 2014
Achievement
Dictionaries

Python Collections (Retired)

Achieved
Dec 23, 2014
Achievement
Local Python

Setting Up a Local Python Environment

Achieved
Dec 21, 2014
Achievement
Slices

Python Collections (Retired)

Achieved
Dec 21, 2014
Achievement
Lists Redux

Python Collections (Retired)

Achieved
Dec 14, 2014
Achievement
Pick a Number! Any Number!

Python Basics (Retired)

Achieved
Dec 13, 2014
Achievement
Putting the "Fun" Back in "Functions"

Python Basics (Retired)

Achieved
Dec 13, 2014
Achievement
Shopping List

Python Basics (Retired)

Achieved
Dec 11, 2014
Achievement
Things That Count

Python Basics (Retired)

Achieved
Dec 11, 2014
Achievement
Ins & Outs

Python Basics (Retired)

Achieved
Dec 11, 2014
Achievement
Say Hello to Python

Python Basics (Retired)

Achieved
Dec 11, 2014
Achievement
Ruby Numbers

Ruby Foundations

Achieved
Mar 3, 2014
Achievement
Ruby Strings

Ruby Foundations

Achieved
Mar 3, 2014
Achievement
Beyond the Basics

Objective-C Basics (Retired)

Achieved
Mar 2, 2014
Achievement
Advanced Objective-C

Objective-C Basics (Retired)

Achieved
Mar 2, 2014
Achievement
Foundation Framework

Objective-C Basics (Retired)

Achieved
Mar 1, 2014
Achievement
Creating the Menu and Footer

Build a Simple PHP Application

Achieved
Feb 27, 2014
Achievement
Getting Started with PHP

Build a Simple PHP Application

Achieved
Feb 27, 2014
Achievement
Joining Relational Data Between Tables in SQL

Database Foundations

Achieved
Feb 26, 2014
Achievement
Manipulating Schema with SQL

Database Foundations

Achieved
Feb 25, 2014
Achievement
Creating Tables and Manipulating Data with SQL

Database Foundations

Achieved
Feb 25, 2014
Achievement
Reading Data from Databases with SQL

Database Foundations

Achieved
Feb 25, 2014
Achievement
Installing MySQL Server and MySQL Workbench

Database Foundations

Achieved
Feb 25, 2014
Achievement
Introduction to Data, Databases and SQL

Database Foundations

Achieved
Feb 23, 2014
Achievement
Introduction to Objective-C

Objective-C Basics (Retired)

Achieved
Feb 20, 2014
Achievement
Website Basics

Website Basics

Achieved
Feb 16, 2014
Achievement
Selectors

CSS Foundations

Achieved
Feb 14, 2014
Achievement
Workflows

Git Basics

Achieved
Feb 14, 2014
Achievement
Working With Remote Repositories

Git Basics

Achieved
Feb 14, 2014
Achievement
Merging

Git Basics

Achieved
Feb 14, 2014
Achievement
Branches

Git Basics

Achieved
Feb 14, 2014
Achievement
Getting Started With Git

Git Basics

Achieved
Feb 13, 2014
Achievement
Why Version Control Matters

Git Basics

Achieved
Feb 13, 2014
Achievement
JavaScript Objects

JavaScript Foundations

Achieved
Feb 13, 2014
Achievement
JavaScript Functions

JavaScript Foundations

Achieved
Feb 13, 2014
Achievement
JavaScript Arrays

JavaScript Foundations

Achieved
Feb 13, 2014
Achievement
JavaScript Numbers

JavaScript Foundations

Achieved
Feb 13, 2014
Achievement
JavaScript Strings

JavaScript Foundations

Achieved
Feb 12, 2014
Achievement
Introduction Variables

JavaScript Foundations

Achieved
Feb 12, 2014
Achievement
Getting Started with CSS

CSS Foundations

Achieved
Feb 11, 2014
Achievement
Launching the Website

Build a Simple Website

Achieved
Feb 11, 2014
Achievement
Styling Content

Build a Simple Website

Achieved
Feb 11, 2014
Achievement
Creating a Website Structure

Build a Simple Website

Achieved
Feb 11, 2014
Achievement
Text Editors and HTML

Build a Simple Website

Achieved
Feb 11, 2014
Achievement
Pointers and Memory

Objective-C Basics (Retired)

Achieved
Feb 10, 2014
Achievement
Functional Programming in C

Objective-C Basics (Retired)

Achieved
Feb 10, 2014
Achievement
Fundamentals of C

Objective-C Basics (Retired)

Achieved
Feb 10, 2014
Achievement
Website Basics

Build a Simple Website

Achieved
Feb 10, 2014
Achievement
Objects, Classes, and Variables

Ruby Foundations

Achieved
Feb 9, 2014
Achievement
Ruby Basics

Ruby Foundations

Achieved
Feb 9, 2014
Achievement
Functions

Introduction to Programming

Achieved
Feb 9, 2014
Achievement
Objects and Arrays

Introduction to Programming

Achieved
Feb 9, 2014
Achievement
Control Structures

Introduction to Programming

Achieved
Feb 9, 2014
Achievement
Forms

HTML

Achieved
Feb 9, 2014
Achievement
Tables

HTML

Achieved
Feb 9, 2014
Achievement
Objects

HTML

Achieved
Feb 8, 2014
Achievement
Links

HTML

Achieved
Feb 8, 2014
Achievement
Lists

HTML

Achieved
Feb 8, 2014
Achievement
Text

HTML

Achieved
Feb 8, 2014
Achievement
Environment and Redirection

Console Foundations

Achieved
Feb 8, 2014
Achievement
Installing Programs

Console Foundations

Achieved
Feb 7, 2014
Achievement
Console Processes

Console Foundations

Achieved
Feb 7, 2014
Achievement
Introduction to Front-End Frameworks

Framework Basics

Achieved
Feb 7, 2014
Achievement
Installing a Ruby Development Environment

Installing a Ruby Development Environment

Achieved
Feb 7, 2014
Achievement
DNS Basics

Technology Foundations

Achieved
Feb 7, 2014
Achievement
Graphic Basics

Technology Foundations

Achieved
Feb 6, 2014
Achievement
Console Users and Permission

Console Foundations

Achieved
Feb 6, 2014
Achievement
Moving Around in the Console

Console Foundations

Achieved
Feb 6, 2014
Achievement
Basics

Introduction to Programming

Achieved
Feb 6, 2014
Achievement
Introduction

HTML

Achieved
Feb 6, 2014
Achievement
Newbie

Achieved
Feb 6, 2014