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Revision as of 07:44, 30 October 2019

This wiki is all about APL, an array-oriented programming language. It has a powerful, concise syntax that lets you develop shorter programs that enable you to think more about the problem you're trying to solve rather than how to express it to a computer.

Running APL

Main article: Running APL

Traditionally a commercial language, there are now quite a few APL dialects available to download for free without feature limitations, and most of these can be tried online without installing anything.

Introduction to APL

Main article: Tutorials

Taking up APL can ba a daunting task, but a few introductory guides have been created to help in the process:

I am new to programming

I am a programmer but new to APL

I want to learn intermediate APL

I'm an old APLer who wants to learn modern APL

Who uses APL?

There are many case studies of both hobby and real-world APL applications.

There is a popular APL chat room on Stack Exchange.

There are active user groups all around the globe, many of these hold regular in-person meet-ups.

Examples

Main article: Examples

APL's terseness means that substantial programs are expressable in a small space, relative to many other programming languages. Here are some examples:

Split text by delimiter

Try it now!

      ','(≠⊆⊢)'comma,delimited,text'
┌─────┬─────────┬────┐
│comma│delimited│text│
└─────┴─────────┴────┘

Works in: Dyalog APL

Conway's "Game of Life"

John Scholes is famous for the following implementation of Conway's "Game of Life": Try it online!

      ⎕←world←2 2 2 2⊤0 12 5 2 4 1
0 1 0 0 0 0
0 1 1 0 1 0
0 0 0 1 0 0
0 0 1 0 0 1
      {↑1 ⍵∨.∧3 4=+/,¯1 0 1∘.⊖¯1 0 1∘.⌽⊂⍵} world
1 1 0 1 0 0
0 1 1 1 0 0
0 1 0 1 1 0
0 0 1 0 0 0

Works in: Dyalog APL, ngn/apl

Template:APL programming language

APL community [edit]
Conferences and activities	Advent of Code ∙ APL Campfire ∙ APL Cultivation ∙ APL Meetup (Portuguese) ∙ APL Show ∙ APL Problem Solving Competition ∙ APL Challenge ∙ APL Quest ∙ APL Seeds ∙ Array Cast ∙ BAA sessions ∙ Code golf ∙ Dyalog user meetings ∙ Dyalog webinars ∙ Iverson Award
Chat rooms and forums	APL Farm ∙ APL Orchard
User groups	APL et J (France) ∙ APL Germany (terminology) ∙ APL ∊ BCN (Spain) ∙ BAA (UK) ∙ FinnAPL (Finland) ∙ SIGAPL (USA) ∙ Tokyo APL/J/K Meetup (Japan)
People	Phil Abrams ∙ Brian Becker ∙ Bob Bernecky ∙ Larry Breed ∙ Charles Brenner ∙ Jim Brown ∙ Adám Brudzewsky ∙ Gitte Christensen ∙ Peter Donnelly ∙ John Earnest ∙ Adin Falkoff ∙ Garth Foster ∙ Lib Gibson ∙ Aaron Hsu ∙ Roger Hui ∙ Ken Iverson ∙ Morten Kromberg ∙ Dick Lathwell ∙ Marshall Lochbaum ∙ Eugene McDonnell ∙ Roger Moore ∙ Trenchard More ∙ Alan Perlis ∙ Henry Rich ∙ Al Rose ∙ John Scholes ∙ Ian Sharp ∙ Bob Smith ∙ Geoff Streeter ∙ Joey Tuttle ∙ Arthur Whitney
Other	APL Quote Quad ∙ APL Wiki ∙ Blogs ∙ Books ∙ Case studies ∙ Famous APL users ∙ Humour ∙ Jobs ∙ Merchandise ∙ Papers ∙ Podcasts ∙ TryAPL ∙ Try It Online ∙ Video channels

@@ Line 33: / Line 33: @@
 APL's terseness means that substantial programs are expressable in a small space, relative to many other programming languages. Here are some examples:
 === Split text by delimiter ===
+[https://tryapl.org/?a=%27%2C%27%28%u2260%u2286%u22A2%29%27comma%2Cdelimited%2Ctext%27&run Try it now!]
 <source lang=apl>
        ','(≠⊆⊢)'comma,delimited,text'
@@ Line 39: / Line 40: @@
 └─────┴─────────┴────┘
 </source>
-{{Works in|[[Dyalog APL]], [[dzaima/APL]], [[NARS2000]], [[ngn/apl]]}}
+{{Works in|[[Dyalog APL]]}}
 === Conway's "Game of Life" ===
 [[John Scholes]] is famous for the following implementation of Conway's "Game of Life":
+[https://tio.run/##SyzI0c1Lz/v//1Hf1EdtE8rzi3JSgLSRAhg@6lpioGBopGAK5JgoGHJBFD3qXQNlVT9qm2io8Kh366OOFXqPOpYbK5jYauvrHFpvqADU96hjht6jrmnIvJ69j7qagOprFcA2/f8PAA Try it online!]
 <source lang=apl>
        ⎕←world←2 2 2 2⊤0 12 5 2 4 1
@@ Line 55: / Line 57: @@
 0 1 0 0 0
 </source>
-{{Works in|[[Dyalog APL]], [[dzaima/APL]], [[GNU APL]], [[NARS2000]], [[ngn/apl]]}}
+{{Works in|[[Dyalog APL]], [[ngn/apl]]}}
 {{APL programming language}}
 {{APL community}}