Racket is a popular variant of the Scheme programming language. Its features and benefits include:
Grow your Program: Racket's interactive mode encourages experimentation, and quick scripts easily compose into larger systems. Small scripts and large systems both benefit from native-code JIT compilation. When a system gets too big to keep in your head, you can add static types.
Grow your Language: Extend Racket whenever you need to. Mold it to better suit your tasks without sacrificing interoperability with existing libraries and without having to modify the tool chain. When less is more, you can remove parts of a language or start over and build a new one.
Grow your Skills: Whether you're just starting out, want to know more about programming language applications or models, looking to expand your horizons, or ready to dive into research, Racket can help you become a better programmer and system builder.
What's new in Racket
Racket 8.0 marks the first release where Racket CS is the default implementation. Creating, polishing, and adopting Racket CS has been a 4-year effort involving the entire Racket community. At this point, Racket CS is faster, easier to maintain and develop, and compatible with existing Racket programs. Racket CS will continue to improve, but at this point it is ready to be the primary variant of Racket for all Racketeers. More details about the current state of Racket CS are available in the recent blog post.
Other notable changes:
Racket CS has better parallel garbage collection, a 10%-30% reduction in the size of generated code, and various targeted optimizations.
A rewrite of the test-engine package allows the #lang versions of teaching languages to produce linked test-failure messages.
The release comes with a new mark-up DSL for composing text to appear in the REPL (simple-tree-text-markup).
Redex has an added define-overriding-judgment form and improved error source location reporting.
Windows scrolling speed reflects the system preference.
The db package uses the utf8mb4 charset for MySQL connections.
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