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---
layout: page
published: true
noToc: false
noComments: false
noDate: false
title: Fun - Standard Library Overview
subtitle: Overview of the standard library modules under ./lib with one-line summaries.
description: Overview of the standard library modules under ./lib with one-line summaries.
permalink: /documentation/stdlib/
lang: en
tags:
- lib
- library
- line
- modules
- one
- standard
- summaries
- under
---
This page provides a quick orientation to the standard library located under [`./lib/`](../lib/).
The stdlib is written in Fun and organized by domain. Below is the current layout with brief notes. Refer to the source for full APIs and examples.
## Top-level modules
- `arrays.fun` — helpers for working with array structures.
- `cli.fun` — minimal helpers for building CLI tools.
- `hello.fun` — simple demonstration helper(s).
- `hex.fun` — hexadecimal encode/decode helpers.
- `math.fun` — math helpers in Fun.
- `regex.fun` — simple regex-related helpers (see also `regex/`).
- `strings.fun` — string manipulation utilities.
## Packages
- `crypt/` — cryptographic primitives and hashes. See [lib/crypt](../lib/crypt/).
- `aes256.fun`
- `crc32.fun`, `crc32c.fun`
- `md5.fun`, `md5_legacy.fun`
- `ripemd160.fun`, `ripemd160_new_try.fun`
- `sha1.fun`, `sha256.fun`, `sha384.fun`, `sha512.fun`
- `encoding/` — text/binary encodings and conversions. See [lib/encoding](../lib/encoding/).
- `base64.fun`
- `io/` — input/output utilities and system interfaces. See [lib/io](../lib/io/).
- `console.fun` — console I/O helpers
- `ini.fun` — INI parse helpers
- `json.fun` — JSON helpers
- `pcsc.fun`, `pcsc2.fun` — smart card access (PC/SC)
- `process.fun` — spawn and manage subprocesses
- `serial.fun` — serial port helpers
- `socket.fun` — socket convenience wrappers
- `thread.fun` — simple threading utilities
- `xml.fun` — XML helpers
- `net/` — networking helpers and example HTTP servers. See [lib/net](../lib/net/).
- `cgi.fun` — basic CGI helpers
- `http_server.fun` — blocking HTTP server
- `http_cgi_server.fun` — HTTP server that can execute .fun CGI files
- `http_cgi_lib_server.fun` — variant of the HTTP CGI server using the stdlib
- `regex/` — regular expression utilities (PCRE2-based when available). See [lib/regex](../lib/regex/).
- `pcre2.fun`
- `ui/` — user interface helpers (built if the corresponding extensions are enabled). See [lib/ui](../lib/ui/).
- `notcurses.fun`
- `tk.fun`
- `utils/` — small reusable helpers and functional utilities. See [lib/utils](../lib/utils/).
- `datetime.fun`
- `match.fun`
- `math.fun`
- `option.fun`
- `range.fun`
- `result.fun`
Note: Availability of some modules can depend on optional extensions selected at build time (see [build.md](./build/)). For instance, `regex/pcre2.fun` requires PCRE2 support; `ui/*` depends on chosen UI backends.
## Using modules
<pre>#include <strings.fun>
let s = trim(" hello ")
print(s)
</pre>
For search paths and namespacing details, see [includes.md](./includes/) and [cli.md](./cli/) (FUN_LIB_DIR and DEFAULT_LIB_DIR).