GNU's programming and extension language — GNU Guile (original) (raw)
Guile is designed to help programmers create flexible applications that can be extended by users or other programmers with plug-ins, modules, or scripts.
With Guile you can create applications and games for the desktop, the Web, the command-line, and more.
Code examples
Guile is an implementation of the Scheme programming language, supporting the Revised5 and most of the Revised6 language reports, as well as many SRFIs. It also comes with a library of modules that offer additional features, like an HTTP server and client, XML parsing, and object-oriented programming.
(define name "World") (display (string-append "Hello " name "!")) (newline)
Hello world program
Define a variable called name, join the texts Hello, name, and ! together to form the greeting Hello world!, and display it on the screen.
(use-modules (srfi srfi-19))
(display (date->string (current-date)
"A, ~B ~e ~Y ~H:S"))
(newline)
Importing modules
Import the srfi-19 module and use its functions to display the current date and time in the format WEEKDAY, MONTH MONTHDAY YEAR HOUR:SECOND.
(use-modules (web server))
(define (my-handler request request-body) (values '((content-type . (text/plain))) "Hello World!"))
(run-server my-handler)
Hello HTTP server
Run a Web server that will return a response with the text "Hello World!" to every request sent by HTTP clients. Open http://localhost:8080/ to see the result.
Guile is an extension language platform
Guile contains an efficient compiler and virtual machine. It can be used out of the box to write programs in Scheme, or can easily be integrated with C and C++ programs.
Guile is the GNU Ubiquitous Intelligent Language for Extensions, and the official extension language of the GNU project.
Extend applications
In addition to Scheme, Guile includes compiler front-ends for ECMAScript and Emacs Lisp (support is underway for Lua), which means your application may be extended in the language (or languages) most appropriate for your user base. And Guile's tools for parsing and compiling are exposed as part of its standard module set, so support for additional languages can be added without writing a single line of C.
Guile empowers users with "practical software freedom"
Using any of the supported scripting languages, users can customize and extend applications while they are running and see the changes take place live!
Users can easily trade and share features by uploading and downloading the scripts, instead of trading complex patches and recompiling their applications.
Applications using Guile
GNU GuixPackage manager and GNU distribution
GnuCashAccounting software
Lepton-EDASuite for Electronic Design Automation
GDBThe GNU debugger
News
GNU Guile 3.0.10 releasedJune 24, 2024We are pleased to finally announce the release of GNU Guile 3.0.10! This release is mainly a bug-fix release, though it does include a number of new features:Better ability…GNU Guile 3.0.9 releasedJanuary 25, 2023We are pleased to announce the release of GNU Guile 3.0.9! This release fixes a number of bugs and adds several new features, among which:New bindings for POSIX functionality,…GNU Guile 3.0.8 releasedFebruary 11, 2022We are delighted to announce the release of GNU Guile 3.0.8. This release adds support for cross-module inlining: allowing small functions and constants defined in one module…