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Constructing Boundaries (Not Just Using Classes)
- The debate over classes vs functions is not just about keywords but more about constructing clear boundaries around behavior and dependencies.
- Defining constructors, either as functions or classes, helps in creating clearer boundaries around configuration and collaborators for testable and maintainable systems.
- Dependency injection, through constructors or factory functions, allows for more composable and testable code with explicit construction and injection of dependencies.
- By constructing boundaries explicitly, both class-based and factory-based loggers provide clean, testable APIs and flexibility in managing instances.
- Explicit construction and dependency injection enable cleaner separation, environment-specific wiring of dependencies, and easier testing in modular architectures.
- The upfront cost of setting up patterns like constructors and injectable utilities is low and pays off in flexibility, clarity, and ease of change as the system scales.
- Java and Go also emphasize constructing with dependencies and wiring behavior explicitly, avoiding ambient state and promoting composable code.
- The focus should be on constructing boundaries deliberately, whether using classes, factory functions, or other patterns, to improve adaptability and maintainability.
- The key is not the class keyword but the intentional construction of boundaries and clear separation of concerns to make the codebase adaptable and easier to reason about.
- Whether using classes, factories, or other constructs, the essence lies in constructing boundaries effectively to enable composability and maintainable code.
- Designing code for flexibility and composability, rather than overengineering for uncertain future features, leads to more manageable and adaptable systems.
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