Scheme

File Format
Name	Scheme
Ontology	Languages Programming Languages Scheme
Extension(s)	.scm, .sch, .ss, .rkt (Racket)

Scheme is a dialect of LISP which attempts to keep the semantics clean and simple with few divergent ways to express something (which is a diametrically opposite tack to Perl, which prides itself in having "more than one way to do anything").

Scheme also has its own variants, such as GNU Guile and Racket.

Links

• MIT Scheme page
• Current version of the Scheme standard, R6RS
• Previous version of the Scheme standard: R5RS
• Working groups and drafts for the next version of the Scheme standard, R7RS, here
• List of Scheme resources, papers and implementations [1]
• Structure and Interpretation of Computer Programs (aka. "The Scheme Bible") available here (based on R5RS)
• The Scheme Programming Language, Fourth Edition, by R. Kent Dybvig (free online book)