Chengyu Deng

Chengyu Deng

Boston, MA
Open to Work

7,879

Total Points

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
    • Chinese

96 Achievements

  • Achievement

    Python: Inheritance

    Object-Oriented Python

    Achieved

    Sep 10, 2017

    Python: Inheritance
  • Achievement

    Python: Instant Objects

    Object-Oriented Python

    Achieved

    Sep 6, 2017

    Python: Instant Objects
  • Achievement

    Dungeon Game 2

    Python Collections (2016, retired 2019)

    Achieved

    Sep 4, 2017

    Dungeon Game 2
  • Achievement

    Python Sets

    Python Collections (2016, retired 2019)

    Achieved

    Sep 1, 2017

    Python Sets
  • Achievement

    Python Tuples

    Python Collections (2016, retired 2019)

    Achieved

    Sep 1, 2017

    Python Tuples
  • Achievement

    Python Dictionaries

    Python Collections (2016, retired 2019)

    Achieved

    Aug 30, 2017

    Python Dictionaries
  • Achievement

    Python Slices

    Python Collections (2016, retired 2019)

    Achieved

    Aug 29, 2017

    Python Slices
  • Achievement

    Python Lists

    Python Collections (2016, retired 2019)

    Achieved

    Aug 29, 2017

    Python Lists
  • Achievement

    Letter Game App

    Python Basics (2015)

    Achieved

    Jul 16, 2017

    Letter Game App
  • Achievement

    Number Game App

    Python Basics (2015)

    Achieved

    Jul 8, 2017

    Number Game App
  • Achievement

    Shopping List App

    Python Basics (2015)

    Achieved

    Jul 7, 2017

    Shopping List App
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Jul 6, 2017

    Logic in Python
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    Jun 20, 2017

    Python Data Types
  • Achievement

    Displaying Additional Views

    Build a Vending Machine App in Swift 2.0

    Achieved

    Mar 10, 2016

    Displaying Additional Views
  • Achievement

    Using the Vending Machine

    Build a Vending Machine App in Swift 2.0

    Achieved

    Mar 5, 2016

    Using the Vending Machine
  • Achievement

    Loading Data From a Resource

    Build a Vending Machine App in Swift 2.0

    Achieved

    Mar 3, 2016

    Loading Data From a Resource
  • Achievement

    Modeling An Interface

    Build a Vending Machine App in Swift 2.0

    Achieved

    Mar 2, 2016

    Modeling An Interface
  • Achievement

    Data Types and Variables

    Objective-C Basics

    Achieved

    Feb 25, 2016

    Data Types and Variables
  • Achievement

    Delegation in iOS

    Delegates in Swift 2

    Achieved

    Feb 18, 2016

    Delegation in iOS
  • Achievement

    Introduction to Delegates

    Delegates in Swift 2

    Achieved

    Feb 15, 2016

    Introduction to Delegates
  • Achievement

    Implementing the Detail View

    Enhance a Weather App with Table Views

    Achieved

    Feb 13, 2016

    Implementing the Detail View
  • Achievement

    Custom Table View Cells

    Enhance a Weather App with Table Views

    Achieved

    Feb 13, 2016

    Custom Table View Cells
  • Achievement

    Next Week's Weather

    Enhance a Weather App with Table Views

    Achieved

    Feb 13, 2016

    Next Week's Weather
  • Achievement

    Moving Around in the Console

    Console Foundations

    Achieved

    Feb 11, 2016

    Moving Around in the Console
  • Achievement

    Upgrading Stormy

    Enhance a Weather App with Table Views

    Achieved

    Feb 10, 2016

    Upgrading Stormy
  • Achievement

    Introduction to Table Views

    Enhance a Weather App with Table Views

    Achieved

    Feb 9, 2016

    Introduction to Table Views
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Feb 2, 2016

    Python For Beginners
  • Achievement

    Intro to Objective-C

    Objective-C Basics

    Achieved

    Jan 29, 2016

    Intro to Objective-C
  • Achievement

    Error Handling in Swift 2.0

    Error Handling in Swift 2.0

    Achieved

    Jan 27, 2016

    Error Handling in Swift 2.0
  • Achievement

    Creating Flexible Objects with Protocols

    Swift Protocols

    Achieved

    Jan 24, 2016

    Creating Flexible Objects with Protocols
  • Achievement

    Protocols

    Swift Protocols

    Achieved

    Jan 24, 2016

    Protocols
  • Achievement

    Creating Flexible Objects Using Protocols

    Swift 2.0 Protocols

    Achieved

    Jan 24, 2016

    Creating Flexible Objects Using Protocols
  • Achievement

    Swift 2.0 Protocols

    Swift 2.0 Protocols

    Achieved

    Jan 24, 2016

    Swift 2.0 Protocols
  • Achievement

    Refreshing the Data

    Build a Weather App with Swift

    Achieved

    Jan 18, 2016

    Refreshing the Data
  • Achievement

    Adding Weather Icons

    Build a Weather App with Swift

    Achieved

    Jan 18, 2016

    Adding Weather Icons
  • Achievement

    Objects and Optionals

    Swift 2.0 Enumerations and Optionals

    Achieved

    Jan 6, 2016

    Objects and Optionals
  • Achievement

    Introduction to Optionals

    Swift 2.0 Enumerations and Optionals

    Achieved

    Jan 5, 2016

    Introduction to Optionals
  • Achievement

    Introduction to Enumerations

    Swift 2.0 Enumerations and Optionals

    Achieved

    Jan 5, 2016

    Introduction to Enumerations
  • Achievement

    Running Apps on a Device

    Build a Simple iPhone App with Swift 2.0

    Achieved

    Jan 4, 2016

    Running Apps on a Device
  • Achievement

    Improving Our User Interface

    Build a Simple iPhone App with Swift 2.0

    Achieved

    Jan 4, 2016

    Improving Our User Interface
  • Achievement

    Structs as Data Models

    Build a Simple iPhone App with Swift 2.0

    Achieved

    Jan 4, 2016

    Structs as Data Models
  • Achievement

    View Controllers and Views

    Build a Simple iPhone App with Swift 2.0

    Achieved

    Jan 3, 2016

    View Controllers and Views
  • Achievement

    Getting Started with iOS Development

    Build a Simple iPhone App with Swift 2.0

    Achieved

    Jan 2, 2016

    Getting Started with iOS Development
  • Achievement

    Differentiating Between Objects

    Object-Oriented Swift 2.0

    Achieved

    Jan 2, 2016

    Differentiating Between Objects
  • Achievement

    Class Inheritance

    Object-Oriented Swift 2.0

    Achieved

    Jan 2, 2016

    Class Inheritance
  • Achievement

    Classes

    Object-Oriented Swift 2.0

    Achieved

    Jan 2, 2016

    Classes
  • Achievement

    Welcome to the Treehouse Club

    Treehouse Club: HTML

    Achieved

    Nov 22, 2015

    Welcome to the Treehouse Club
  • Achievement

    WWW

    How the Web Works

    Achieved

    Nov 22, 2015

    WWW
  • Achievement

    The Internet

    How the Internet Works

    Achieved

    Nov 21, 2015

    The Internet
  • Achievement

    Computer Languages

    Computer Basics

    Achieved

    Nov 21, 2015

    Computer Languages
  • Achievement

    Computer Basics

    Computer Basics

    Achieved

    Nov 21, 2015

    Computer Basics
  • Achievement

    Managing Complexity

    Build a Weather App with Swift

    Achieved

    Nov 21, 2015

    Managing Complexity
  • Achievement

    Interacting With Data From the Web

    Build a Weather App with Swift

    Achieved

    Nov 19, 2015

    Interacting With Data From the Web
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Nov 18, 2015

    Getting Started with Java
  • Achievement

    Complex Data Structures

    Object-Oriented Swift 2.0

    Achieved

    Nov 6, 2015

    Complex Data Structures
  • Achievement

    Function Parameters

    Swift 2.0 Functions

    Achieved

    Nov 6, 2015

    Function Parameters
  • Achievement

    Functions in Swift 2.0

    Swift 2.0 Functions

    Achieved

    Nov 6, 2015

    Functions in Swift 2.0
  • Achievement

    Control Flow with Conditional Statements

    Swift 2.0 Collections and Control Flow

    Achieved

    Nov 6, 2015

    Control Flow with Conditional Statements
  • Achievement

    Control Flow With Loops

    Swift 2.0 Collections and Control Flow

    Achieved

    Nov 6, 2015

    Control Flow With Loops
  • Achievement

    Swift Dictionaries

    Swift 2.0 Collections and Control Flow

    Achieved

    Nov 6, 2015

    Swift Dictionaries
  • Achievement

    Introduction to Collections

    Swift 2.0 Collections and Control Flow

    Achieved

    Nov 6, 2015

    Introduction to Collections
  • Achievement

    Swift Operators

    Swift 2.0 Basics

    Achieved

    Oct 16, 2015

    Swift Operators
  • Achievement

    Swift Types

    Swift 2.0 Basics

    Achieved

    Oct 16, 2015

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift 2.0 Basics

    Achieved

    Oct 16, 2015

    An Introduction to Swift Programming
  • Achievement

    Simple Data Structures

    Build a Weather App with Swift

    Achieved

    Aug 20, 2015

    Simple Data Structures
  • Achievement

    Closures in iOS

    Swift Closures

    Achieved

    Aug 18, 2015

    Closures in iOS
  • Achievement

    Closures and Closure Expressions

    Swift Closures

    Achieved

    Aug 17, 2015

    Closures and Closure Expressions
  • Achievement

    Functions as First Class Citizens

    Swift Closures

    Achieved

    Aug 9, 2015

    Functions as First Class Citizens
  • Achievement

    Refactoring Our Code (Swift)

    Build a Playlist Browser with Swift

    Achieved

    Aug 9, 2015

    Refactoring Our Code (Swift)
  • Achievement

    Building the Master and Detail Views (Swift)

    Build a Playlist Browser with Swift

    Achieved

    Aug 6, 2015

    Building the Master and Detail Views (Swift)
  • Achievement

    Building a Music Library and Playlists (Swift)

    Build a Playlist Browser with Swift

    Achieved

    Aug 6, 2015

    Building a Music Library and Playlists (Swift)
  • Achievement

    Using a Navigation Controller With Segues (Swift)

    Build a Playlist Browser with Swift

    Achieved

    Aug 5, 2015

    Using a Navigation Controller With Segues (Swift)
  • Achievement

    Working With Multiple View Controllers (Swift)

    Build a Playlist Browser with Swift

    Achieved

    Aug 4, 2015

    Working With Multiple View Controllers (Swift)
  • Achievement

    Deploying to a Device

    Build a Simple iPhone App with Swift

    Achieved

    Aug 4, 2015

    Deploying to a Device
  • Achievement

    Debugging Our App

    Build a Simple iPhone App with Swift

    Achieved

    Aug 4, 2015

    Debugging Our App
  • Achievement

    Improving Our User Interface

    Build a Simple iPhone App with Swift

    Achieved

    Aug 3, 2015

    Improving Our User Interface
  • Achievement

    Using a Data Model

    Build a Simple iPhone App with Swift

    Achieved

    Aug 3, 2015

    Using a Data Model
  • Achievement

    Views and View Controllers

    Build a Simple iPhone App with Swift

    Achieved

    Aug 2, 2015

    Views and View Controllers
  • Achievement

    Getting Started with Xcode

    Build a Simple iPhone App with Swift

    Achieved

    Aug 2, 2015

    Getting Started with Xcode
  • Achievement

    Swift Value vs Reference Types

    Object-Oriented Swift

    Achieved

    Aug 2, 2015

    Swift Value vs Reference Types
  • Achievement

    Swift Properties

    Object-Oriented Swift

    Achieved

    Aug 1, 2015

    Swift Properties
  • Achievement

    Swift Inheritance

    Object-Oriented Swift

    Achieved

    Aug 1, 2015

    Swift Inheritance
  • Achievement

    Swift Classes and Objects

    Object-Oriented Swift

    Achieved

    Aug 1, 2015

    Swift Classes and Objects
  • Achievement

    Swift Structs and their Methods

    Swift Enums and Structs

    Achieved

    Jul 31, 2015

    Swift Structs and their Methods
  • Achievement

    Swift Structs

    Swift Enums and Structs

    Achieved

    Jul 31, 2015

    Swift Structs
  • Achievement

    Swift Enums and their Methods

    Swift Enums and Structs

    Achieved

    Jul 31, 2015

    Swift Enums and their Methods
  • Achievement

    Swift Enums

    Swift Enums and Structs

    Achieved

    Jul 31, 2015

    Swift Enums
  • Achievement

    Swift Optionals

    Swift Functions and Optionals

    Achieved

    Jul 30, 2015

    Swift Optionals
  • Achievement

    Swift Parameters and Tuples

    Swift Functions and Optionals

    Achieved

    Jul 30, 2015

    Swift Parameters and Tuples
  • Achievement

    Swift Functions

    Swift Functions and Optionals

    Achieved

    Jul 29, 2015

    Swift Functions
  • Achievement

    Control Flow

    Swift Basics (retired)

    Achieved

    Jul 29, 2015

    Control Flow
  • Achievement

    Collections

    Swift Basics (retired)

    Achieved

    Jul 29, 2015

    Collections
  • Achievement

    Operators

    Swift Basics (retired)

    Achieved

    Jul 28, 2015

    Operators
  • Achievement

    Types

    Swift Basics (retired)

    Achieved

    Jul 28, 2015

    Types
  • Achievement

    Variables and Constants

    Swift Basics (retired)

    Achieved

    Jul 28, 2015

    Variables and Constants
  • Achievement

    Newbie

    Achieved

    Jul 28, 2015

    Newbie