Scheme Standards

The Scheme programming language (Wikipedia) has been gradually improved and extended through many rounds of standardization, starting from the original 1975 paper, Scheme: An Interpreter for Extended Lambda Calculus, and continuing through R7RS Large, which is still in progress. Many of the standards have been part of a series of reports named following the convention "Revisedⁿ Report on… Scheme," abbreviated "RⁿRS." There was also an IEEE-ratified standard that is close to R5RS.

Here are links to all the Scheme standards documents:

• R0RS, Scheme: An Interpreter for Extended Lambda Calculus
• R1RS, The Revised Report on Scheme, a Dialect of Lisp
• R2RS, The Revised Revised Report on Scheme, a Dialect of Lisp
• R3RS, Revised³ Report on the Algorithmic Language Scheme
• R4RS, Revised⁴ Report on the Algorithmic Language Scheme
• R5RS, Revised⁵ Report on the Algorithmic Language Scheme
• IEEE 1178-1990, IEEE Standard for the Scheme Programming Language
• R6RS, Revised⁶ Report on the Algorithmic Language Scheme
  • base
  • libraries
  • appendices
  • rationale
• R7RS, Revised⁷ Report on the Algorithmic Language Scheme
  • Small (charter)
  • Large (unfinished, charter)

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