ngn/apl
ngn/apl is an APL bytecode compiler and interpreter by Nick Nickolov. Because it is implemented in Javascript, it can be run in Node.js or any modern browser.
ngn/apl supports most of the core language of Dyalog APL 14.0,: dfns (<source lang=apl inline>{⍺ ⍵}</syntaxhighlight>), nested arrays, complex numbers (<source lang=apl inline>1j2</syntaxhighlight>), forks and atops, strand assignment (<source lang=apl inline>(a b)←c</syntaxhighlight>), indexed assignment (<source lang=apl inline>a[b]←c</syntaxhighlight>), and user-defined operators (<source lang=apl inline>{⍺⍺ ⍵⍵}</syntaxhighlight>), but does not support Key (<source lang=apl inline>⌸</syntaxhighlight>), Rank (operator (<source lang=apl inline>⍤</syntaxhighlight>) tradfns (<source lang=apl inline>∇R←X f Y</syntaxhighlight>), non-zero index origin (<source lang=apl inline>⎕IO←1</syntaxhighlight>), comparison tolerance (<source lang=apl inline>⎕CT</syntaxhighlight>), prototypes (it always uses zero as fill), modified assignment (<source lang=apl inline>x+←1</syntaxhighlight>), keywords (<source lang=apl inline>:If</syntaxhighlight>), object-oriented programming, or namespaces. It extends Dyalog APL with infinities (<source lang=apl inline>¯</syntaxhighlight> or <source lang=apl inline>∞</syntaxhighlight>) and a few additoinal primitives.
On December 27, 2020, Nickolov announced that he would discard his implementation.[1] Soon after, Adám Brudzewsky took up the mantle of hosting the source and online demo.[2]
External link
- Compiling APL to JavaScript article in the Vector journal
- ngn/apl on REPL
- ngn/APL on Try It Online
- Online demo
- Online session
- Source code
References
- ↑ Nickolov, N. "ngn". Announcement. APL Orchard. Stack Exchange chat.
- ↑ Brudzewsky, A. "Adám". Announcement. APL Orchard. Stack Exchange chat.
| APL dialects [edit] | |
|---|---|
| Maintained | APL+Win ∙ APL2 ∙ APL64 ∙ APL\iv ∙ Aplette ∙ April ∙ Co-dfns ∙ Dyalog APL ∙ Dyalog APL Vision ∙ dzaima/APL ∙ GNU APL ∙ Kap ∙ NARS2000 ∙ Pometo ∙ TinyAPL |
| Historical | A Programming Language ∙ A+ (A) ∙ APL# ∙ APL2C ∙ APL\360 ∙ APL/700 ∙ APL\1130 ∙ APL\3000 ∙ APL.68000 ∙ APL*PLUS ∙ APL.jl ∙ APL.SV ∙ APLX ∙ Extended Dyalog APL ∙ Iverson notation ∙ IVSYS/7090 ∙ NARS ∙ ngn/apl ∙ openAPL ∙ Operators and Functions ∙ PAT ∙ Rowan ∙ SAX ∙ SHARP APL ∙ Rationalized APL ∙ VisualAPL (APLNext) ∙ VS APL ∙ York APL |
| Derivatives | AHPL ∙ BQN ∙ CoSy ∙ ELI ∙ Glee ∙ I ∙ Ivy ∙ J ∙ Jelly ∙ K (Goal, Klong, Q) ∙ KamilaLisp ∙ Lang5 ∙ Lil ∙ Nial ∙ RAD ∙ Uiua |
| Overviews | Comparison of APL dialects ∙ Timeline of array languages ∙ Timeline of influential array languages ∙ Family tree of array languages |