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

Join our Live Career-Building Workshop: Launch Your Tech-Adjacent Career! ⭐ Register here!

🌟 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
  • Stanislav Zaichenko
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Stanislav Zaichenko
    iOS Development with Swift Techdegree Student 4,929 Points

    Ive got solution working in my sandbox however it wont pass through compiler error here in code challenge

    Posted December 2, 2019 6:02pm by Stanislav Zaichenko
    .a{fill-rule:evenodd;}techdegree
    Stanislav Zaichenko
    iOS Development with Swift Techdegree Student 4,929 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • Omar De Yamlor
    Omar De Yamlor
    10,980 Points

    Swift 4 update for associated types

    Posted December 20, 2018 5:04pm by Omar De Yamlor
    Omar De Yamlor
    10,980 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Constraints With Where Clauses

    0 Answers

  • Anthia Tillbury
    Anthia Tillbury
    3,388 Points

    Appending generic value to return array in Extending Generic Types Task

    Posted November 19, 2018 8:41pm by Anthia Tillbury
    Anthia Tillbury
    3,388 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    3 Answers

  • Vladimir Taranik
    Vladimir Taranik
    4,841 Points

    I can't understand this at all

    Posted November 3, 2018 3:30pm by Vladimir Taranik
    Vladimir Taranik
    4,841 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Protocol with Associated Type

    1 Answer

  • john lau
    john lau
    3,471 Points

    Make sure the function you're adding matches the signature exactly as described

    Posted June 10, 2018 11:22am by john lau
    john lau
    3,471 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    7 Answers

  • john lau
    john lau
    3,471 Points

    Make sure you're adding the filter(byPrefix:) function to the extension of Array

    Posted May 31, 2018 4:36am by john lau
    john lau
    3,471 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    0 Answers

  • john lau
    john lau
    3,471 Points

    Make sure you're only extending the array where Element conforms to PrefixContaining

    Posted May 28, 2018 3:48am by john lau
    john lau
    3,471 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    2 Answers

  • Sam Belcher
    Sam Belcher
    3,719 Points

    Extending Generic Types

    Posted March 26, 2018 5:52pm by Sam Belcher
    Sam Belcher
    3,719 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • Sam Belcher
    Sam Belcher
    3,719 Points

    Extending Generic Types

    Posted March 22, 2018 9:08pm by Sam Belcher
    Sam Belcher
    3,719 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • mark gilchrist
    PLUS
    mark gilchrist
    Courses Plus Student 33,169 Points

    Code doesnt run on treehouse, works on playground

    Posted March 1, 2018 8:00am by mark gilchrist
    mark gilchrist
    Courses Plus Student 33,169 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    0 Answers

  • Peter Correa
    Peter Correa
    17,155 Points

    Why do we have the need to use *mutating func* and not just *func*?

    Posted December 13, 2017 8:20pm by Peter Correa
    Peter Correa
    17,155 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Associated Types

    1 Answer

  • Brandon Mahoney
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Brandon Mahoney
    iOS Development with Swift Techdegree Graduate 30,149 Points

    Not sure why 'associatedType' is not working

    Posted September 16, 2017 11:33pm by Brandon Mahoney
    .a{fill-rule:evenodd;}techdegree seal-36
    Brandon Mahoney
    iOS Development with Swift Techdegree Graduate 30,149 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Protocol with Associated Type

    1 Answer

  • rohitdevnani
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    rohitdevnani
    iOS Development Techdegree Student 14,882 Points

    Give the function an external name of with and local name of object.

    Posted August 7, 2017 12:30am by rohitdevnani
    .a{fill-rule:evenodd;}techdegree
    rohitdevnani
    iOS Development Techdegree Student 14,882 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Protocol with Associated Type

    2 Answers

  • Richard Sun
    Richard Sun
    11,257 Points

    Generic Element in Array conforms to PrefixContaining but, according to Xcode, has no func "hasPrefix"

    Posted July 12, 2017 5:34pm by Richard Sun
    Richard Sun
    11,257 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • Akos Turi
    Akos Turi
    7,517 Points

    challenge

    Posted May 13, 2017 1:03am by Akos Turi
    Akos Turi
    7,517 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • Ingo Ngoyama
    Ingo Ngoyama
    4,882 Points

    no code snippet

    Posted May 10, 2017 2:21am by Ingo Ngoyama
    Ingo Ngoyama
    4,882 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    1 Answer

  • Shaan Marok
    PLUS
    Shaan Marok
    Courses Plus Student 1,015 Points

    Why are there so many errors associated with the case sensitivity of these questions? 'Object' not 'object'!

    Posted May 5, 2017 11:52pm by Shaan Marok
    Shaan Marok
    Courses Plus Student 1,015 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Protocol with Associated Type

    0 Answers

  • Will Matthews
    Will Matthews
    8,127 Points

    Looks like the code snippets are missing here

    Posted March 28, 2017 9:36am by Will Matthews
    Will Matthews
    8,127 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    2 Answers

  • Bryce Vernon
    Bryce Vernon
    3,936 Points

    Generics Code Challenge Help!

    Posted February 23, 2017 12:25am by Bryce Vernon
    Bryce Vernon
    3,936 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Extending Generic Types

    5 Answers

  • eberhapa
    eberhapa
    51,495 Points

    HashableShoppingItem example

    Posted February 17, 2017 9:59pm by eberhapa
    eberhapa
    51,495 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Constraints With Where Clauses

    0 Answers

  • tomandrews
    tomandrews
    13,183 Points

    Course feedback

    Posted February 17, 2017 9:28am by tomandrews
    tomandrews
    13,183 Points
    • iOS
    • Generics in Swift
    • Generics and Protocols
    • Constraining Associated Types

    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.