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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 runs on GNU/Linux and on Windows using Cygwin, and uses Unicode internally. GNU APL was written and is being maintained by GNU APL community.

GNU APL interpreter includes:

  • nested arrays and related functions
  • complex numbers, and
  • a shared variable interface

In addition, GNU APL can be scripted.

Richard Stallman, founder of the GNU Project, had been an early adopter of APL, using it to write a text editor as a high school student in the summer of 1969.

As of recently, there is an (experimental) online version of GNU APL.

External links

APL dialects [edit]
Maintained APL+WinAPL2APL64APL\ivApletteAprilCo-dfnsDyalog APLdzaima/APLExtended Dyalog APLGNU APLKAPNARS2000Pometo
Historical A Programming LanguageA+ (A) ∙ APL#APL\360APL/700APL\1130APL\3000APL.68000APL*PLUSAPL.jlAPL.SVAPLXIverson notationIVSYS/7090NARSngn/aplopenAPLOperators and FunctionsPATRowanSAXSHARP APLRationalized APLVisualAPL (APLNext) ∙ VS APLYork APL
Derivatives AHPLBQNCoSyELIGleeIIvyJJellyJellyfishK (Q, KDB+) ∙ Lang5NialRAD
Overviews Timeline of array languagesTimeline of influential array languagesFamily tree of array languages