Here is a table that you follow the naming variables in Rust.
| Item | Convention |
|---|---|
| Crates | Not Clear(https://github.com/rust-lang/api-guidelines/issues/29) |
| Modules | snake_case |
| Types | UpperCamelCase |
| Traits | UpperCamelCase |
| Enum variants | UpperCamelCase |
| Functions | snake_case |
| Methods | snake_case |
| General constructors | new or with_more_details |
| Conversion constructors | from_some_other_type |
| Macros | snake_case! |
| Local variables | snake_case |
| Statics | SCREAMING_SNAKE_CASE |
| Constants | SCREAMING_SNAKE_CASE |
| Type parameters | concise UpperCamelCase, usually single uppercase letter: T |
| Lifetimes | short lowercase, usually a single letter: ‘a, ‘de, ‘src |
| Features | https://github.com/rust-lang/api-guidelines/issues/101 but see https://rust-lang.github.io/api-guidelines/naming.html#c-feature |