Rust Naming Conventions: The Official Style Guide

Rust enforces naming conventions at the compiler level — using the wrong case triggers a warning.

Convention Table

Item	Convention	Example
Variables	snake_case	let user_name = ...
Functions	snake_case	fn get_user()
Structs	PascalCase	struct UserAccount
Enums	PascalCase	enum Color { Red, Blue }
Traits	PascalCase	trait Serialize
Constants	SCREAMING_SNAKE	const MAX_SIZE: u32
Modules	snake_case	mod user_auth
Crate names	snake_case	serde_json
Type parameters	Single uppercase	T, K, V
Lifetimes	Short lowercase	'a, 'ctx

Convert

snake_case, PascalCase, or CONSTANT_CASE. Hub.