• Summary
• Acknowledgments
• Getting Started


• Overview of Scheme
• Lexical conventions
• Basic concepts
• Expressions
• Program structure
• Standard procedures


• Haskell Interface


• Standard Libraries
• Husk Libraries
• Standard Feature Identifiers
• Index

This user manual provides a detailed description of the Scheme language as implemented by Husk, as well as the Husk standard libraries.

Scheme is a statically scoped and properly tail recursive dialect of the Lisp programming language [23] invented by Guy Lewis Steele Jr. and Gerald Jay Sussman. It was designed to have exceptionally clear and simple semantics and few different ways to form expressions. A wide variety of programming paradigms, including imperative, functional, and object-oriented styles, find convenient expression in Scheme.

The Revised⁷ Report on the Algorithmic Language Scheme (R⁷RS) was used as a starting point for this manual. Husk implements a superset of the R⁵RS standard, and also includes most of the R⁷RS language.

Husk may be used as either a stand-alone Scheme implementation or as an extension language within a larger Haskell application, and is available under the MIT license.