# Pure Core / Imperative Shell

> An arrangement that keeps decision logic pure and pushes all side effects to a thin outer shell.

Record: `lex:pure-core-imperative-shell`
Kind: pattern
Layer: [Atomic Boundary](https://banes-lab.com/records/layer/atomic-boundary.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-pure-core-imperative-shell

## category

- [Transactions / State / Concurrency](https://banes-lab.com/records/lex-category/transactions-state-concurrency.md)

## referenced-by

- [Controlled Side Effects](https://banes-lab.com/records/arch/controlled-side-effects.md)