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

# rust_hello_args.fun — overview

What it shows
- Passing arguments into Rust-backed opcodes and handling returns.

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

Notes
- Requires building with FUN_WITH_RUST.