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.
;;; Hello world program (define name "World") (display (string-append "Hello " name "!")) (newline)
Hello world program
Define a variable called
name, join the texts
! together to form the greeting
Hello world!, and display it on the screen.
;;; Show current date and time (use-modules (srfi srfi-19)) (display (date->string (current-date) "~A, ~B ~e ~Y ~H:~S")) (newline)
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.
;;; Hello HTTP server (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.
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.
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 Guix & GuixSD
Package manager and GNU distribution
Suite for Electronic Design Automation
The GNU debugger
GNU Guile 2.1.3 released (beta)
June 19, 2016
We are delighted to announce GNU Guile release 2.1.3, the next pre-release in what will become the 2.2 stable series. This release rewrites the ports facility to better support…
GNU Guile 2.1.2 released (beta)
February 3, 2016
We are chuffed to announce GNU Guile release 2.1,2, the next pre-release in what will become the 2.2 stable series. This release features unboxed arithmetic and dramatically…
GNU Guile FOSDEM schedule available!
December 30, 2015
The schedule of GNU Guile's developer room at FOSDEM is now available on-line! It features 10 talks covering different projects including Guile-SSH, wisp, GNU Guix, and more.…