Types Every variable, item, and value in a Rust program has a type. The type of a value defines the interpretation of the memory holding it and the operations that may be performed types of candy bars list the value.

Built-in types are tightly integrated into the language, in nontrivial ways that are not possible to emulate in user-defined types. A type expression as defined in the Type grammar rule above is the syntax for referring to a type. Self path where Self is the implementing type. The inferred type which asks the compiler to determine the type. Parentheses which are used for disambiguation. Trait types: Trait objects and impl trait.