Scheme (programming language): Difference between revisions

Revision as of 02:17, 22 November 2002

Revision as of 23:13, 10 December 2002

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Scheme has very little syntax compared to many other programming languages. It has no operator precedence rules because they are explicit in the notation.

Thanks to its macro facilities, Scheme can be adoptedadapted to any problem ___domain. Extending Scheme to naturally support [[object-oriented programming]] can be done using only macros.

Scheme encourages [[functional programming]]. Pure functional programs need no global variables and don't have side-effects, and are therefore automatically thread-safe, automatically verifyable and have more of these nice properties. However, Scheme can also do [[variable assignment]] for those who want it.

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== Disadvantages of Scheme ==

Unlike scripting languages such as [[Perl programming language|Perl]] or [[Python programming language|Python]], Scheme is not standardized beyond its core. Functions that exist in one Scheme implementation do not need to exist in another or may have a completely different name and/or interface. The ''Scheme Requests for Implementation'' (SRFI) process tries to remedy this.

== Standards ==

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== Implementations ==

* [http://www.scheme.com/ Chez Scheme], a proprietary freeware Scheme interpreter and commercial Scheme compiler for [[Microsoft Windows]] and several [[UNIX]] systems

* [[Guile]] is the [[GNU|GNU project]]'s official extension language. The Scheme interpreter is packaged as a library to providesprovide scripting to applications. It can be found [http://www.gnu.org/software/guile/ here].

* [http://www.plt-scheme.org/ The PLT Scheme suite], a suite of Scheme programs for Windows, Mac, and Unix platforms including an interpreter (MzScheme), a graphical toolkit (MrEd), a pedagogically-oriented graphical editor (DrScheme), and various other components including [[COM]] and [[ODBC]] libraries.