---
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title: Fun - functions_test.fun — overview
subtitle: Documentation for functions_test.fun — overview
description: Documentation for functions_test.fun — overview
permalink: /documentation/examples/functions_test/
lang: en
tags:
- documentation
- handbook
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---

# functions_test.fun — overview

What it shows
- Functions, closures, and return behavior; call semantics basics.

How to run
- export FUN_LIB_DIR="./lib"
- ./build_debug/fun examples/functions_test.fun
- Or: fun examples/functions_test.fun