Magnar Sveen

Clojure programmer from Norway with 14 years of experience. Co-host of the "Parents of the Dead" podcast and creator of an Emacs Rocks screencast. Works at the Norwegian Food Safety Authority.

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Apr 1, 2025 • 49min

E101 FC/IS with magnars

Magnar Sveen, a seasoned Clojure programmer from Norway, dives into the Functional Core, Imperative Shell (FC/IS) architecture. He explains how this pattern enhances code maintainability by separating business logic from side effects, making 85% of code pure functions. Magnar also shares insights on the importance of Datomic for data management and practical strategies for implementing FC/IS. The discussion touches on the real-world benefits, including improved error handling and REPL-driven development, along with challenges in transitioning to this modern architecture.

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