🤑 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
  • William Polk
    William Polk
    9,026 Points

    Create another public static method named Square that matches the signature of the MathOperation delegate. Inside the me

    Posted July 23, 2021 3:19pm by William Polk
    William Polk
    9,026 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

  • Mariia Ashurova
    Mariia Ashurova
    10,913 Points

    Help pls

    Posted February 25, 2019 9:27pm by Mariia Ashurova
    Mariia Ashurova
    10,913 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

  • Jason Rice
    Jason Rice
    6,657 Points

    this should work...

    Posted October 2, 2017 4:30am by Jason Rice
    Jason Rice
    6,657 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

  • sharon smith
    sharon smith
    10,527 Points

    re Code Challenge, instantiation and delegate method

    Posted August 24, 2017 10:03pm by sharon smith
    sharon smith
    10,527 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    3 Answers

  • shawn khah
    shawn khah
    15,082 Points

    help me

    Posted October 19, 2016 8:38pm by shawn khah
    shawn khah
    15,082 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

  • shawn khah
    shawn khah
    15,082 Points

    help plz

    Posted October 11, 2016 5:04pm by shawn khah
    shawn khah
    15,082 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

  • Rhett Herring
    PLUS
    Rhett Herring
    Courses Plus Student 11,023 Points

    is this not what we are after here:

    Posted August 28, 2016 11:45pm by Rhett Herring
    Rhett Herring
    Courses Plus Student 11,023 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    2 Answers

  • Subhadeep Ray
    Subhadeep Ray
    12,933 Points

    Error Hint not understood

    Posted June 17, 2016 5:59pm by Subhadeep Ray
    Subhadeep Ray
    12,933 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    2 Answers

  • Lewis Cowles
    Lewis Cowles
    74,902 Points

    what's going wrong here?

    Posted May 28, 2016 10:23am by Lewis Cowles
    Lewis Cowles
    74,902 Points
    • C#
    • Querying With LINQ
    • Functional Programming in C#
    • Delegates

    1 Answer

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.