Go Programming Language: Everything You Need To Know About It (Part 9)

Hello, I'm Ganesh Kumar. I'm working on git-lrc : a Git hook for Checking AI generated code. AI agents write code fast. They also silently remove logic, change behavior, and introduce bugs -- without telling you. You often find out in production. git-lrc fixes this. It hooks into git commit and reviews every diff before it lands. 60-second setup. Completely free. In my previous post, We learned about conditional control flow. Now we will learn about defer. Why defer is used? The primary purpose of defer is to ensure that certain tasks are performed regardless of how a function exits (whether it completes successfully, reaches a return statement, or even "panics" due to an error). Reliability: It prevents resource leaks (like leaving a file open) by allowing you to pair "open" and "close" actions together visually in the code. Panic Safety: Even if the program throws an error (a "panic") in the middle of a function, deferred functions are still executed by the Go runtime before the prog