Structs on Sanketh's Blog

Rust Notes — Module 3

Sat, 21 Mar 2026 00:00:00 +0000

Rust Notes — Module 3: Structs & Enums

1. Structs

Structs group related data together into a named type — same concept as C structs, cleaner syntax.

struct User {
 username: String,
 email: String,
 age: u32,
 active: bool,
}

Creating and Accessing

let user = User {
 username: String::from("sanketh"),
 email: String::from("sanketh@example.com"),
 age: 20,
 active: true,
};

println!("{}", user.username); // field access with .

Mutability

The entire instance must be mut — you cannot mark individual fields as mutable: