Dougie Richardson

Every day is a school day

  • The Horn

    The Horn

    Overlooks M8 and periodically “speaks” although I’ve never made out what it says. Sculpted by Dalziel and Scullion and commissioned by West Lothian Council.

  • Expo on Codespaces

    Expo on Codespaces

    What will I need?

    How long will it take?

    About ten minutes.

    Lets give it a go!

    Create a new Codespace using the blank template:

    Once initalised, create an empty Expo React App (select (y)es when prompted):

    npx create-expo-app example

    Install the expo-cli command line tool globally:

    npm install -g expo-cli

    Change into your example project’s folder and edit App.js, maybe adding an image or whatever, before updating packages:

    cd example
npm update

    Login to your Expo account from the command line:

    Create an account with Expo and login using the expo login command.

    Expo-cli supports tunnelling, a proxy URL accesible from any device over the Internet, using ngrok. 

    expo start --tunnel

    After installing the requested library (@expo/ngrok@^4.1.0), you should see a QR code:

    Open the Expo Go app on your device, login, and then scan the QR code. The app will bundle and be available on your device.

    Further reading

  • Metro not starting automatically on Ubuntu

    Metro not starting automatically on Ubuntu

    Expected behaviour:

    npm run android

    Should launch Metro and an Android emulator but Metro is not launched. Manually launching metro works:

    npm start