A Beginner’s Guide to Building Strong Foundations Before You Dive into Arbitrum Stylus by Odisha DAO

“Before you build on Stylus, you need to vibe with Rust.”

This guide helps you understand Rust from the perspective of smart contract developers - what makes it special, how it differs from Solidity/JavaScript, what you need to know, and how to practice it interactively before deploying your first WASM-based contract.

🧭 Quick Overview (Table of Contents)

1. What is Rust & Why It Matters in Web3
2. Rust vs Solidity vs JavaScript — Key Differences
3. Core Rust Concepts Every Smart Contract Dev Should Know
4. Practicing Rust Online (Playgrounds & Simulators)
5. Example Projects (Beginner → Advanced DApps)
6. Mindset, Pitfalls & Tips
7. Further Reading & Useful Links

1️⃣ What is Rust & Why It Matters in Web3

Rust is a systems programming language known for:

• Memory safety without garbage collection
• Speed comparable to C/C++
• Modern syntax and strong compiler checks

In Web3, Rust has become the go-to language for ecosystems like Solana, Polkadot, CosmWasm, and now Arbitrum Stylus, because it can compile directly to WebAssembly (WASM) — the execution layer Stylus uses.