πŸ€‘ Join the Treehouse affiliate program and earn 25% recurring commission!

New No-Code Track! πŸš€start learning today!

🌟 Dreaming of a bright future? πŸŽ“ Ask about the Treehouse Scholarship program! πŸš€

✨ 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
    • 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
  • 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
  • DΓ‘ithΓ­ Γ“ Raghallaigh
    PLUS
    DΓ‘ithΓ­ Γ“ Raghallaigh
    Courses Plus Student 585 Points

    NSString *bestSmartphone = @"iPhone";

    Posted February 14, 2018 11:20pm by DΓ‘ithΓ­ Γ“ Raghallaigh
    DΓ‘ithΓ­ Γ“ Raghallaigh
    Courses Plus Student 585 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • String Basics

    1 Answer

  • shivam kaushik
    shivam kaushik
    2,127 Points

    Objective-c basics course retired

    Posted January 31, 2016 11:50am by shivam kaushik
    shivam kaushik
    2,127 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Objective-C Recap

    1 Answer

  • micram1001
    micram1001
    33,833 Points

    Would be nice to know what version of Xcode you could use.

    Posted December 3, 2015 6:31am by micram1001
    micram1001
    33,833 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Tour of Xcode

    2 Answers

  • Frances Boon
    PLUS
    Frances Boon
    Courses Plus Student 378 Points

    Am taking the challenge of writing a NSString. NSString *cubstring = @ "iPhone"; What is the error?

    Posted November 24, 2015 4:00am by Frances Boon
    Frances Boon
    Courses Plus Student 378 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • String Basics

    2 Answers

  • Alex Major
    Alex Major
    397 Points

    That staircase in the background does not look safe

    Posted June 1, 2015 12:51am by Alex Major
    Alex Major
    397 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Introduction to Fun Facts

    2 Answers

  • Jesse Gardona
    Jesse Gardona
    298 Points

    Where do you add this NSString? The teacher just writes it out but does not tell you where this line of code goes.

    Posted May 20, 2015 7:53am by Jesse Gardona
    Jesse Gardona
    298 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Objective-C Recap

    1 Answer

  • Zac Carter
    Zac Carter
    739 Points

    Are there any X-code IDEs for windows?

    Posted May 16, 2015 3:36am by Zac Carter
    Zac Carter
    739 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Introduction to Fun Facts

    1 Answer

  • cakins
    cakins
    9,304 Points

    Compiler error - Create a variable named bestSmartphone of type NSString with the value "iPhone"

    Posted March 8, 2015 9:37am by cakins
    cakins
    9,304 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • String Basics

    2 Answers

  • Raj Gill
    PLUS
    Raj Gill
    Courses Plus Student 560 Points

    Do we have join a developer program on apple? Because its asking me join one. And if i don't, the preview won't work...

    Posted February 14, 2015 6:52pm by Raj Gill
    Raj Gill
    Courses Plus Student 560 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • Tour of Xcode

    3 Answers

  • lori pinkerton
    lori pinkerton
    140 Points

    Having hard time with Code Challenge Here is my code: NSString *pubcrawl =@"Crawl"; Signed, Pissed

    Posted February 12, 2015 10:05pm by lori pinkerton
    lori pinkerton
    140 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • String Basics

    3 Answers

  • lori pinkerton
    lori pinkerton
    140 Points

    This is what I typed for the NSString exercise: NSString *myString =@"Pub Crawl"; I keeps saying it's incorrect

    Posted February 12, 2015 2:52am by lori pinkerton
    lori pinkerton
    140 Points
    • iOS
    • Build a Simple iPhone App with Objective-C
    • Getting Started With Xcode
    • String Basics

    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.