Defer Functions In Golang: Everything You Need To Know

The defer keyword in Go is a powerful feature you must know! Structs are also really common in Golang and that's why I highly recommend watching this video here as well: https://youtu.be/c8H0w4yBL10 📝 Description In this video, we dive deep into one of the most useful and powerful features in Golang—the defer keyword. This concept allows for deferred processing that executes a function just before it returns, making it especially useful for cleanup operations or handling panics. We'll look into three different use-cases: reading a file, logging the execution time of a function, and handling and recovering from panics. Each example will provide you with practical knowledge on how to use the defer keyword effectively in your Golang code. ⏳ Timestamps: 00:00 - Definition of defer 01:37 - 1. Use case - Reading a file 05:55 - 2. Use case - Benchmarking a function 09:39 - 3. Use case - Recover from panics 11:52 - Outro 👋 Hey there! If you are new to this channel: Hey 👋 my name is Flo and I am a professional software engineer with a passion for coding in Golang, TypeScript, JavaScript, and Rust. This channel is where I share that passion and dive into the exciting world of software engineering. Plus, I love using Emojis and paper-based animations (so have a look for that, if you want to find my videos). 📨 Support and Connect! Buy me a coffee: https://www.buymeacoffee.com/florianwoelki Become a member: https://www.youtube.com/@FloWoelki/membership Discord: https://discord.gg/TnA7drJ Instagram: https://www.instagram.com/flowydev/ LinkedIn: https://www.linkedin.com/in/florian-woelki/ TikTok: https://www.tiktok.com/@florianwoelki GitHub: https://github.com/FlorianWoelki 📝 Copyright Notice The original Go Gopher version is originally designed by Renée French (Source: https://go.dev/blog/gopher License details: https://creativecommons.org/licenses/by/4.0/). The gopher used in the video and thumbnail is inspired by this author. #golang #go #defer