Rust Constants Explained for Backend Developers (Node.js → Rust)

If you’re a Node.js backend developer starting with Rust, this video is for you.

In this video, we solve a very common backend problem:
❌ Hard-coded file paths like "emails.txt"

In Node.js, we usually move this to a config or constant.
Rust enforces the same discipline — but in a much safer way.

🔹 What you’ll learn in this video:
Why hardcoding paths is a bad idea
How to create constants in Rust using `const`
Where constants should live in a Rust project
Rust vs Node.js approach to configuration
When to use constants vs environment variables

🔹 Perfect for:
Node.js / Express / Backend developers
Developers learning Rust from scratch
Anyone transitioning from JavaScript to Rust

📌 Example covered:
We refactor a Rust program that reads `emails.txt` and replace hard-coded paths with proper Rust constants.

🦀 Rust is strict — and that’s what makes it great for backend systems.

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#RustLang #NodeJS #BackendDevelopment #RustForBeginners #SystemsProgramming