Connecting a Flutter app to physical devices means dealing with BLE permissions, connection states, and byte-level data.
In this handbook, Nikheel shows you how to work with Bluetooth Low Energy in Flutter using flutter_blue_plus.
You'll learn about scanning, GATT services,
We're a community of millions of people who are building new skills and getting new jobs together. A 501(c)(3) public charity. Tweets by @abbeyrenn.
- Writing to a database and message queue separately can leave your system inconsistent when one operation fails. In this tutorial, @gkoos430 shows you how the transactional outbox pattern solves this dual-write problem in Node.js. You'll build a reliable event flow using
- GitHub Actions workflows often have more permissions than they actually need. In this tutorial, @rufilboss shows you how to harden your workflows using least-privilege permissions. You'll learn how to scope access by job, separate read and write permissions, use OIDC for cloud
- Inverting PDF colors can improve readability in low-light environments and help you preview alternative document designs. In this tutorial, @allinonetools shows you how to build a browser-based PDF color inverter with JavaScript. You'll learn how to manipulate colors, preview
- It's time for the daily coding challenge! You'll get a string, and you'll need to determine whether the number of vowels in the first half is equal to the number of vowels in the second half. Check it out on the freeCodeCamp mobile app.

