Final answer:
OCaml's modularity features include Modules for encapsulation, Functors for higher-order modularity, Abstract Types for hiding implementation details, and Polymorphic Variants for flexibility and extendability in data types.
Step-by-step explanation:
The question 4 OCaml features for modularity refers to the capabilities of the OCaml programming language that enable developers to organize and structure their code in a modular fashion. In OCaml, modularity can be achieved through several features:
- Modules: These are the primary way to group related definitions and functions, allowing encapsulation and namespace management.
- Functors: Functors are modules parameterized over other modules, providing higher-order modularity.
- Abstract Types: The ability to define types whose concrete implementation details are hidden, enhancing interface abstraction.
- Polymorphic Variants: These allow for flexible and extendable data types which can work with different structures without rigidly fixing them in advance.
These features make OCaml a powerful tool for building large, maintainable, and reusable codebases.