Rust Functions Tutorial | Parameters & Return Values for Beginners (2026)

Learn how to create and use functions in Rust! This beginner tutorial covers basic functions, parameters, and return values with clear code explanations. 🔥 In This Tutorial: ━━━━━━━━━━━━━━━━━━━━━━━ 0:00 - Intro 0:06 - Basic Functions (fn keyword) 1:38 - Function Parameters (&str) 3:08 - Return Values (arrow type) 4:51 - Outro 📚 What You'll Learn: ━━━━━━━━━━━━━━━━━━━━━━━ ✅ Create functions with the fn keyword ✅ Call functions from main() ✅ Pass parameters to functions ✅ Use &str for string parameters ✅ Return values with arrow syntax ✅ Implicit return (no semicolon) 💻 Code Examples: ━━━━━━━━━━━━━━━━━━━━━━━ // Basic function fn greet() { println!("Hello from a function!"); } // Function with parameter fn greet(name: &str) { println!("Hello, {}!", name); } // Function with return value fn add(a: i32, b: i32) returns i32 { a + b // No semicolon = return! } ⚡ Key Concepts: ━━━━━━━━━━━━━━━━━━━━━━━ → Functions are defined with 'fn' → Parameters have type annotations: name: &str → Return type uses arrow syntax → Last expression without semicolon is returned → main() is always the entry point 🛠️ Tools Used: ━━━━━━━━━━━━━━━━━━━━━━━ → rustc (Rust compiler) → nvim (code editor) 👍 Like & Subscribe for more Rust tutorials! #rust #rustlang #programming #functions #tutorial #beginners #coding #learnrust