howto-functional-vs-imperative

To assess pure function design in Python and JavaScript, verify that business logic remains pure in the Functional Core while the Imperative Shell manages side effects, using static analysis or documentation verification during code review.

To enforce code structure during code reviews, add the correct classification comments to each file before writing code, ensuring adherence to the Functional Core and Imperative Shell pattern for maintainable application code organization.

The Functional Core and Imperative Shell principle in programming practices separates business logic into a pure Functional Core from an Imperative Shell that manages side effects, ensuring reliable and testable application code organization.

Yes, the Functional Core and Imperative Shell pattern works with Python and JavaScript. It focuses on application code organization to separate pure business logic from side effects, supporting code review processes in these languages.

You should reconsider the Functional Core and Imperative Shell refactoring approach when a file's logic is heavily intertwined with side effects, making it impractical to isolate pure business logic for static analysis or documentation verification.