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'''GNU APL''' is a free and (almost) complete implementation of Extended APL as specified in [[ISO/IEC 13751:2001]] and is thus similar to [[APL2]]. It was initially written and is being maintained by Jürgen Sauermann. It includes extensions such as [[complex number]]s and a shared variable interface. | '''GNU APL''' is a free and (almost) complete implementation of Extended APL as specified in [[ISO/IEC 13751:2001]] and is thus similar to [[APL2]]. It was initially written and is being maintained by Jürgen Sauermann. It includes extensions such as [[complex number]]s and a shared variable interface. | ||
[[File:GNU APL.png|thumb|left|GNU APL's online demo, [http://juergen-sauermann.de/try-GNU-APL try-GNU-APL]]] | |||
In addition to a normal local APL [[session]], GNU APL can used in a "scripting" language fashion by processing linear scripts passed to the interpreter at startup. There is an experimental online version as well as the ability to be compiled into a shared loadable library for embedding the interpreter into other projects. | In addition to a normal local APL [[session]], GNU APL can used in a "scripting" language fashion by processing linear scripts passed to the interpreter at startup. There is an experimental online version as well as the ability to be compiled into a shared loadable library for embedding the interpreter into other projects. | ||
Documents on GNU APL sometimes quote [[Richard Stallman]], who both founded GNU and programmed in APL. However, Stallman is not directly associated with the project. | Documents on GNU APL sometimes quote [[Richard Stallman]], who both founded GNU and programmed in APL. However, Stallman is not directly associated with the project. | ||
== Encoding == | == Encoding == | ||
GNU APL tends to prefer the [[Unicode]] ''Lozenge'' (U+25CA; <source lang=apl inline>◊</source>) and ''Element of'' (U+2208; <source lang=apl inline>∈</source>) over ''Diamond operator'' (U+22C4; <source lang=apl inline>⋄</source>) and ''Small Element of'' (U+220A; <source lang=apl inline>∊</source>) which are more commonly used by other dialects. This can lead to [[SYNTAX ERROR]]s if attempting to use code written for GNU APL in other implementations. However, GNU APL also accepts the more common code points. | GNU APL tends to prefer the [[Unicode]] ''Lozenge'' (U+25CA; <source lang=apl inline>◊</source>) and ''Element of'' (U+2208; <source lang=apl inline>∈</source>) over ''Diamond operator'' (U+22C4; <source lang=apl inline>⋄</source>) and ''Small Element of'' (U+220A; <source lang=apl inline>∊</source>) which are more commonly used by other dialects. This can lead to [[SYNTAX ERROR]]s if attempting to use code written for GNU APL in other implementations. However, GNU APL also accepts the more common code points. | ||
== External links == | |||
* [http://www.gnu.org/software/apl The GNU APL Homepage] | |||
* [http://lists.gnu.org/archive/html/bug-apl/ The GNU APL Mailing List] | |||
* [http://www.gnu.org/software/apl/apl.html The GNU APL Info Manual] | |||
* [http://svn.savannah.gnu.org/viewvc/apl/ GNU APL Sources (Subversion)] | |||
* [https://savannah.gnu.org/svn/?group=apl Help for GNU APL Subversion] | |||
* [http://www.gnu.org/software/apl/Community.html The GNU APL Community] | |||
{{APL dialects}}[[Category:APL dialects]][[Category:Nested array languages]] | {{APL dialects}}[[Category:APL dialects]][[Category:Nested array languages]] | ||