Changed the way some unsafe operations are exposed via. Libraries to help smooth a future transition to a new runtime system. Form supports unwinding side-effects when it backtracks, both explicitly with. Form supports lazy loading of macro transformers.

It works better than this page, because it helps you supply precise information about your Racket installation and working environment. Bug reports for PLaneT packages are submitted on the PLaneT server.

Racket Language and Core Libraries.

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Commonly used features in a side-by-side format. Nodejs, PHP, Python, Ruby. Perl, Lua, Groovy. JavaScript, Smalltalk, Tcl, AutoHotkey. Prolog, Erlang, Elixir. Common Lisp, Racket, Clojure, Emacs Lisp. Rust, Swift, Scala. MATLAB, R, NumPy, Julia. Vim, Emacs, Nano.

This is the Racket mailing list server. We have several public mailing lists, some are listed below with several mirrors for each one. The complete list of public mailing lists is available on this page. A discussion list for all things related to Racket. Ask your questions here! A low-volume, moderated list for announcements, only. List too, no need to subscribe to both. Subscribe to a mailing list. Join the users mailing list.

This page is for legacy support. All new work should use the new Racket package system instead. Affine contracts for one-shot functions and boxes. AspectScheme - higher-order pointcut and advice aspects for Scheme. Quick configuration of PLaneT development links.

Is a full-spectrum programming language. It goes beyond Lisp and Scheme with dialects that support objects. Racket enables programmers to link components written in different dialects. And it empowers programmers to create new, project-specific dialects. Finds Racket sources in all subdirs. To each path in the sequence, and. Applies a pattern to the path. A hello world web server.