Encapsulation

In C++ the encapsulation boundary is the class. In Rust the encapsulation boundary is the module, which may contain several types along with standalone functions. In larger projects, the crate may also act as an encapsulation boundary.

This difference means that in Rust one is more likely to have multiple, tightly coupled types that work together which are defined in one module and encapsulated as a whole.

This section provides ways to translate between C++ and Rust's notions of encapsulation both mechanically and conceptually.