# No Side Effects

> The requirement that a function compute its result without observable side effects.

Record: `lex:no-side-effects`
Kind: constraint
Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-no-side-effects

## category

- [Correctness / Determinism / Verification](https://banes-lab.com/records/lex-category/correctness-determinism-verification.md)

## referenced-by

- [Pure Functions](https://banes-lab.com/records/arch/pure-functions.md)