• Home
  • Free Trial
  • Sign In
  • Plans
  • Tracks
  • Library
  • Community
  • Support
  • Jobs
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • 21st Century Skills
      • • Android
      • • APIs
      • • Business
      • • C#
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Equity, Diversity, and Inclusion (EDI)
      • • Go
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • PHP
      • • Python
      • • Quality Assurance
      • • Ruby
      • • Security
  • Kuan Chung Chang
    Kuan Chung Chang
    5,607 Points

    What's the difference between these 2 description?

    Posted July 29, 2015 3:31pm by Kuan Chung Chang
    Kuan Chung Chang
    5,607 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    2 Answers

  • Zbyszek Pietras
    Zbyszek Pietras
    640 Points

    initializing NSNumber difference

    Posted July 20, 2015 8:50am by Zbyszek Pietras
    Zbyszek Pietras
    640 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    0 Answers

  • glennseplowitz
    glennseplowitz
    13,859 Points

    What is the type of project in XCode being created for this applications?

    Posted May 9, 2015 8:29pm by glennseplowitz
    glennseplowitz
    13,859 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • glennseplowitz
    glennseplowitz
    13,859 Points

    Build keeps failing

    Posted May 9, 2015 8:23pm by glennseplowitz
    glennseplowitz
    13,859 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Heng Liu
    Heng Liu
    16,220 Points

    what does strong syntax means

    Posted May 2, 2015 11:19am by Heng Liu
    Heng Liu
    16,220 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Kunakorn Puntawong
    Kunakorn Puntawong
    3,016 Points

    Why didn't %@ print out the address that the pointer hold? Don't we need to dereference the pointer before we print it ?

    Posted February 7, 2015 3:03am by Kunakorn Puntawong
    Kunakorn Puntawong
    3,016 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Judy Tsai
    Judy Tsai
    6,376 Points

    Expected expression before '@' token

    Posted November 4, 2014 9:03pm by Judy Tsai
    Judy Tsai
    6,376 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Abdul Maye
    Abdul Maye
    780 Points

    NSNumber, NSString, etc.

    Posted October 24, 2014 9:41am by Abdul Maye
    Abdul Maye
    780 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Brian Grober
    Brian Grober
    3,214 Points

    When I download the project files for these videos, the build keeps failing. The error I get is Info.plist Utility Error

    Posted October 19, 2014 12:44pm by Brian Grober
    Brian Grober
    3,214 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • mattlebl
    mattlebl
    10,849 Points

    Difference between setting a variable, and setting a pointer

    Posted September 22, 2014 4:42am by mattlebl
    mattlebl
    10,849 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    2 Answers

  • Vlatko .
    Vlatko .
    2,526 Points

    Can you help me understand the breakdown of this code?

    Posted July 12, 2014 7:07pm by Vlatko .
    Vlatko .
    2,526 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Abdulaziz Alhomaidhi
    Abdulaziz Alhomaidhi
    2,047 Points

    NSNumber

    Posted June 18, 2014 6:36pm by Abdulaziz Alhomaidhi
    Abdulaziz Alhomaidhi
    2,047 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    1 Answer

  • Lance Jordan
    Lance Jordan
    335 Points

    Use of Undeclared Identifier 'initWithInt'

    Posted May 30, 2014 12:08am by Lance Jordan
    Lance Jordan
    335 Points
    • iOS
    • Objective-C Basics (Retired)
    • Foundation Framework
    • NSNumber

    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
  • Perks
  • Public Library Access
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2023 Treehouse Island, Inc.