Скачать или смотреть JavaScript const ≠ Rust const: The Node.js Dev Guide

Coming from Node.js, you might think you know how constants work. But in Rust, const implies something very different than it does in JavaScript.

In this video, I explain how Rust handles constants, the difference between const and static, and why understanding memory layout is crucial for backend developers making the switch from Node.js to Rust. We’ll look at why Rust defaults to immutable variables and how to use compile-time evaluation to speed up your backend applications.

📌 In this video, we cover:

Rust const vs. JS const: Why they aren't the same thing.

The static keyword: When to use global memory locations.

Compile-Time Evaluation: How Rust optimizes your constants before the code even runs.

Type Annotations: Why Rust requires types for constants (unlike let).

Naming Conventions: Why we use SCREAMING_SNAKE_CASE.


👨‍💻 Code Snippets: If you are used to this in Node.js: const PORT = 8080;

You need to understand this in Rust: const PORT: u16 = 8080;

🚀 About the Series: This is part of my "Node.js to Rust" series, designed to help backend developers learn systems programming concepts without getting lost in the weeds.

#RustLang #Nodejs #BackendDeveloper #RustConstants #Programming