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Alex Ellis

Writing about tech, our minds, and how things work.

  • Long running pull requests
    Jun. 26, 2022

    There’s nothing quite like merging a pull request that has been pending for months. It’s so satisfying. At Google, they …

  • How far behind a plane is its noise?
    Jun. 12, 2022

    If you’re ever near a relatively low flying airplane, you may have noticed that it sounds like it’s in a different spot …

  • I only care about the helpful notifications, not the promotional ones
    Jun. 5, 2022

    Here’s a scenario. First, you download an app for a service that has some sort of in-person component, like picking up …

  • Playing with a 3D representation of RGB color space
    May. 28, 2022

    I’m working on a color picking/finding game, and part of it will be asking the user to pick a color from a range of …

  • Wikipedia Over WhatsApp
    May. 21, 2022

    In-flight messaging I was on a Delta flight the other day, and I was thinking about how they offer free messaging from …

  • A basic ear training note matching game
    May. 14, 2022

    This is a game for matching musical notes. JavaScript is needed to run this game. If you don’t have it enabled, I …

  • "I don't know the numbers": a math puzzle
    May. 8, 2022

    I saw a math puzzle the other day on Hacker News. It reads as follows: Two numbers are chosen randomly, both are …

  • Getting comfortable with being uncomfortable
    May. 1, 2022

    Software engineering is cursed with uncertainty. When we’re solving big new problems with software, if the exact problem …

  • Opinionated variable names
    Apr. 17, 2022

    I think a lot about the human part of code, especially the work our brains do when writing and reading it and …

  • What is a minute, really?
    Apr. 10, 2022

    What’s in a minute? It can be sixty long seconds, or it can be just a blink of the eye. Easy ways to slow time down If …

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