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This wiki is all about APL, an array-oriented programming language that will change the way you think about problems and data. With a powerful, concise syntax, APL 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. You can try APL now online or download it for free.

Who are you?

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. Many of these are still active today.

There is an active 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

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

Split text by delimiter	','(≠⊆⊢)'comma,delimited,text'
Conway's "Game of Life"	`{↑1 ⍵∨.∧3 4=+/,¯1 0 1∘.⊖¯1 0 1∘.⌽⊂⍵}`

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.

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