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Elm Articles

Written by thoughtbot, your expert partner for design and development.

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    • Design
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  1. Reasoning by Analogy

    A learning, problem solving, and debugging technique.

    Joël Quenneville
    March 27, 2025
    • Elm
    • Development
    • Debugging
  2. Triangle of Separation

    Write code that’s easier to read, remix, and modify by following this trio of principles.

    Joël Quenneville
    March 3, 2025
    • Ruby
    • Elm
    • Development
    • Good Code
  3. Structuring Conditionals in a Wizard

    Branching early helps structure multi-step forms.

    Joël Quenneville
    August 8, 2023
    • Good Code
    • Elm
    • Ruby
    • Rails
  4. Data Modeling Resources in Elm

    Links to some of the best Elm data modeling resources around the web.

    Joël Quenneville
    November 15, 2022
    • Elm
    • Good Code
  5. A Broader Take on Parsing

    Broadening our definition of “parsing” yields some useful insights.

    Joël Quenneville
    October 14, 2021
    • Elm
    • Ruby
    • Parsing
    • Web
  6. Models That Match Reality

    When modeling a domain, it’s important to have our model actually match reality.

    Joël Quenneville
    October 12, 2021
    • Design
    • Web
    • Elm
    • Ruby
    • Modeling
  7. Fewer Operations on Custom Types is Valuable

    Less is more. Wrapping primitives in custom types restricts your available operations and that’s a good thing.

    Joël Quenneville
    October 11, 2021
    • Elm
    • Ruby
    • Web
  8. Pipeline Decoders in Elm

    What’s the difference between Elm’s classical and pipeline JSON decoders?

    Joël Quenneville
    May 19, 2021
    • Elm
    • Functional Programming
    • Web
  9. Running Out of Maps

    What happens when you need a bigger mapN?

    Joël Quenneville
    May 12, 2021
    • Elm
    • Web
    • Functional Programming
  10. Functional Programming as Algebra

    Let’s return to everyone’s “favorite” subject. 🙄

    EJ Mitchell
    January 26, 2021
    • Functional Programming
    • Mathematics
    • Learning
    • Web
    • Elm
    • Scala
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