ngn/apl

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An APL interpreter written Nick Nickolov in JavaScript, making it run in a under Node.js or in any modern browser.

ngn/apl supports most primitives, dfns ({ }), nested arrays, complex numbers (1j2), infinities (¯ or ), forks and atops, strand assignment ((a b)c), indexed assignment (a[b]c), user-defined operators ({⍺⍺ ⍵⍵}), but does not support tradfns (RX f Y), non-zero index origin (⎕IO), comparison tolerance (⎕CT), prototypes, modified assignment (x+1), keywords (:If), object-oriented programming, namespaces.

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APL dialects [edit]
Maintained APL+Win (APL*PLUS) ∙ APL2APL64APL\ivCo-dfnsDyalog APLdzaima/APLGNU APLNARS2000ngn/apl
Historical Iverson notationA Programming LanguageA+ (A) ∙ APL#APL.68000APL.SVAPLXAPL\1130APL\360NARSopenAPLRowanSHARP APL (SAX) ∙ VisualAPL (APLNext) ∙ VSAPLYork APL
Derivatives ELIJK (Q, KDB+) ∙ LYaPASNialRAD