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

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

Curious which AI tools Treehouse developers love? ⚙️ Check them out!

🫡 Treehouse for Military offers discounts to Veterans, service members and their families!

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • 100 Days of Code
    • Live Sessions
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
  • 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
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • 100 Days of Code Live Sessions Code Adventures Discord Forum Success Stories Treehouse Links
  • 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
      • • 21st Century Skills
      • • AI
      • • Android
      • • APIs
      • • Business
      • • C#
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Equity, Diversity, and Inclusion (EDI)
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • PHP
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
  • Eric M
    Eric M
    2,242 Points

    In Objective-C, is the generic `id` type only a generic for Objective-C objects, or any type of object?

    Posted May 14, 2015 4:12am by Eric M
    Eric M
    2,242 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • Jose Andrade-Sinning
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Jose Andrade-Sinning
    Python Web Development Techdegree Student 12,676 Points

    Please note that the file this class does not compile. It gives me an error that indicate a file is missing.

    Posted March 25, 2015 8:23am by Jose Andrade-Sinning
    .a{fill-rule:evenodd;}techdegree
    Jose Andrade-Sinning
    Python Web Development Techdegree Student 12,676 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • Vineet Tiwari
    Vineet Tiwari
    6,609 Points

    Shape doesn't return the area

    Posted March 16, 2015 9:23am by Vineet Tiwari
    Vineet Tiwari
    6,609 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • birdman
    birdman
    9,450 Points

    When i try to import "Shape.h" it says 'Shape.h' file not found

    Posted November 1, 2014 6:27pm by birdman
    birdman
    9,450 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • Marc Zovighian
    Marc Zovighian
    1,664 Points

    How come we dont need to write *thing?

    Posted October 20, 2014 4:29pm by Marc Zovighian
    Marc Zovighian
    1,664 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • Nupur Kapadia
    Nupur Kapadia
    423 Points

    Dynamic Typing's Use?

    Posted October 15, 2014 2:20am by Nupur Kapadia
    Nupur Kapadia
    423 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    2 Answers

  • Daniel Nochta
    Daniel Nochta
    1,377 Points

    Dynamic Typing

    Posted August 13, 2014 12:14am by Daniel Nochta
    Daniel Nochta
    1,377 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    2 Answers

  • Ivan Kazakov
    PLUS
    Ivan Kazakov
    Courses Plus Student 43,317 Points

    shape description returns some hexadecimal value instead of description

    Posted July 12, 2014 8:07am by Ivan Kazakov
    Ivan Kazakov
    Courses Plus Student 43,317 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    3 Answers

  • Tayseer Edouni
    Tayseer Edouni
    13,927 Points

    Shape class altered from previous lessons

    Posted June 28, 2014 3:26am by Tayseer Edouni
    Tayseer Edouni
    13,927 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    1 Answer

  • J.R. Sedivy
    J.R. Sedivy
    2,545 Points

    Dynamic Typing Exercise

    Posted March 23, 2014 11:29pm by J.R. Sedivy
    J.R. Sedivy
    2,545 Points
    • iOS
    • Objective-C Basics (Retired)
    • Advanced Objective-C
    • Dynamic Typing

    3 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
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2024 Treehouse Island, Inc.