🤑 Join the Treehouse affiliate program and earn 25% recurring commission!

New No-Code Track! 🚀start learning today!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

✨ Earn college credits in Cybersecurity, JS, HTML, CSS and Python

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Community Projects
    • Live Sessions
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Community Projects Live Sessions Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • Android
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
  • Caleb Kleveter
    MOD
    Caleb Kleveter
    Treehouse Moderator 37,862 Points

    Using a custom Class quiz

    Posted February 24, 2015 5:20pm by Caleb Kleveter
    Caleb Kleveter
    Treehouse Moderator 37,862 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    1 Answer

  • Steve Hunter
    Steve Hunter
    57,712 Points

    Create an instance of Song using the designated initializer.

    Posted May 26, 2014 2:59pm by Steve Hunter
    Steve Hunter
    57,712 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    2 Answers

  • Florian Grummel
    Florian Grummel
    5,424 Points

    Why are these two answers wrong?

    Posted April 20, 2014 9:57am by Florian Grummel
    Florian Grummel
    5,424 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    2 Answers

  • Sayana Narayanan
    Sayana Narayanan
    1,221 Points

    convenience constructor

    Posted April 10, 2014 5:41pm by Sayana Narayanan
    Sayana Narayanan
    1,221 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    2 Answers

  • Sayana Narayanan
    Sayana Narayanan
    1,221 Points

    designated initializer

    Posted April 10, 2014 5:40pm by Sayana Narayanan
    Sayana Narayanan
    1,221 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    1 Answer

  • Elliot Beaudoin
    Elliot Beaudoin
    1,430 Points

    Maybe I'm crazy

    Posted April 5, 2014 4:51am by Elliot Beaudoin
    Elliot Beaudoin
    1,430 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    1 Answer

  • Jorge Guzman
    PLUS
    Jorge Guzman
    Courses Plus Student 21,390 Points

    Just can´t cope with the Quiz

    Posted April 4, 2014 10:09am by Jorge Guzman
    Jorge Guzman
    Courses Plus Student 21,390 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    5 Answers

  • Merijn Hoogeveen
    Merijn Hoogeveen
    3,720 Points

    Can't finish the quiz

    Posted February 26, 2014 11:03pm by Merijn Hoogeveen
    Merijn Hoogeveen
    3,720 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    1 Answer

  • Jordan Fowler
    Jordan Fowler
    3,821 Points

    Convenience constructors don't work...

    Posted February 19, 2014 12:22am by Jordan Fowler
    Jordan Fowler
    3,821 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    2 Answers

  • Kyle V
    Kyle V
    781 Points

    Any Advice for this Quiz

    Posted February 17, 2014 7:58pm by Kyle V
    Kyle V
    781 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    3 Answers

  • Anton Rivera
    Anton Rivera
    3,806 Points

    First question with wrong answer?

    Posted February 8, 2014 11:28pm by Anton Rivera
    Anton Rivera
    3,806 Points
    • iOS
    • Build a Blog Reader iPhone App
    • Data Modeling
    • Using a Custom Class

    2 Answers

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

    Treehouse

  • About
  • Blog
  • Careers
  • Community
  • Stories
  • Shop
  • Contact
  • Gift Card

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2025 Treehouse Island, Inc.