74 lines
2.4 KiB
Markdown
74 lines
2.4 KiB
Markdown
---
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layout: page
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published: true
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noToc: false
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noComments: false
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noDate: false
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title: Running the Examples
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subtitle: How to run the examples and the interactive showcase script, with environment tips.
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description: How to run the examples and the interactive showcase script, with environment tips.
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permalink: /documentation/examples/
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lang: en
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tags:
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- environment
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- example
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- examples
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- interactive
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- run
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- running
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- script
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- showcase
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- tips
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---
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This page shows how to run the example programs included with the repository and how to use the interactive showcase script.
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All commands assume you are in the repository root.
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## Prerequisites
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- Build the interpreter (see handbook/). You’ll have `build/fun` (paths may vary by your setup/IDE).
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- Set FUN_LIB_DIR to the repo’s lib directory when running without installation so `#include <...>` can find the standard library.
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Example (Linux/macOS/BSD):
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<pre>FUN_LIB_DIR="$(pwd)/lib" ./build/fun examples/include_lib.fun</pre>
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Windows (PowerShell):
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<pre>$env:FUN_LIB_DIR = "$PWD/lib"
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./build/fun.exe .\examples\include_lib.fun</pre>
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## Interactive showcase: play.fun
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The script `./scripts/play.fun` discovers all `.fun` files under `./examples` and offers to run them one by one:
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<pre>./scripts/play.fun</pre>
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Notes:
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- The script auto-picks your interpreter (FUN_BIN env or `fun` in PATH) and ensures `FUN_LIB_DIR=./lib` so examples resolve includes correctly.
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- It shows the exit code for each run and summarizes failures at the end.
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Tip: you can run specific examples directly too:
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<pre>FUN_LIB_DIR="$(pwd)/lib" fun examples/crypto/openssl_md5.fun</pre>
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## Example categories
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Browse the `examples/` tree for areas of interest:
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- crypto — crypto demonstrations (e.g., OpenSSL MD5/SHA-256/SHA-512 helpers; requires build with `-DFUN_WITH_OPENSSL=ON`)
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- blocking / interactive — I/O or user-interactive patterns
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- error / broken — negative tests and error showcases
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- math — numeric operations
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- sqlited / data — data access and HTTP/CGI-style samples (platform dependent)
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## Creating your own examples
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Place your `.fun` files anywhere under `examples/` to have them picked up by `play.fun`. Use quoted includes for project-local helpers and angle brackets for stdlib modules:
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<pre>#include "examples/my_lib/common.fun"
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#include <io/console.fun></pre>
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If you add an example showcasing a new feature, also consider adding a brief note to the relevant doc (types.md, includes.md, opcodes.md, etc.).
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