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| style="width:50%;text-align:center;" | <span style="font-size:xx-large">Welcome to [[APL Wiki]],</span></br>
[[Special:Statistics|{{NUMBEROFARTICLES}}]] articles about APL that anyone can edit
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APL is an [[wikipedia:Array_programming|array-oriented programming language]]. Its powerful, concise [[APL syntax|syntax]] lets you develop shorter programs that enable you to think more about the problem you're trying to solve than how to express it to a computer.
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Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.
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<h2 style="margin:.75em 0; background:#cef2e0; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; color:#000; padding:0.2em 0.4em;">Running APL</h2>
Traditionally a commercial language, there are now quite a few implementations available to download for free without feature limitations, and several of these can be tried online without installing anything.


<p style="text-align:center">'''[[Running APL]] ∙ [https://tryapl.org/ Try APL online]'''</p>
== Getting started ==
 
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
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* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]
<h2 style="margin:0.75em 0; background:#cedff2; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; color:#000; padding:0.2em 0.4em;>Introduction to APL</h2>
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
 
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Localisation#Translation_resources Localise MediaWiki for your language]
Taking up a new programming language can be a daunting task. While it can appear cryptic at first, APL is actually very easy to learn and [[semantic density|read]]. A few introductory guides have been created to help you in the process.
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Combating_spam Learn how to combat spam on your wiki]
 
<p style="text-align:center">'''[[Discovering APL]] ∙ [[Learning resources]] ∙ [[Language overview]]'''</p>
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<h2 style="margin:0.75em 0; background:#ddcef2; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #afa3bf; color:#000; padding:0.2em 0.4em">Who uses APL?</h2>
APL has gained traction among both hobbyists and and real-world application developers. There are active [[:Category:user groups|user groups]] all around the globe, many of these hold regular in-person meet-ups. There is also a popular online [[APL Orchard|APL chat room]].
 
<p style="text-align:center">'''[[Case studies]] ∙ [[Community|Community overview]]'''</p>
 
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<h2 style="margin:0.75em 0; background:#f2cedd; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #bfa3af; color:#000; padding:0.2em 0.4em">Contributing</h2>
APL Wiki is an online open-content collaborative knowledge base; that is, a voluntary association of individuals and groups working to develop a common knowledge resource. The structure of the project allows anyone with an Internet connection to alter its content.
<p style="text-align:center">'''[[Contributing|How to contribute]] ∙ [[Special:NewPages|New pages]] ∙ [[Special:WantedPages| Wanted pages]] ∙ [[wikipedia:Wiki|What is a wiki?]]'''</p>
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<h2 style="margin:0.75em 0; background:#eeeeee; border:1px solid #ddd; color:#222; padding:0.2em 0.4em; font-size:120%; font-weight:bold; font-family:inherit;">Examples</h2>
APL's terseness means that substantial programs are expressible in a small space, relative to many other programming languages. Below are just a taste. Many more, and fully explained, examples are in the [[simple examples]] article.
=== Split text by delimiter ===
With the introduction of [[tacit]] programming, many functions can be expressed in fewer characters that even the shortest fitting name. For example <source lang=apl inline>≠⊆⊢</source> is but three characters, while would need five for the name <code>Split</code>:
 
[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'
┌─────┬─────────┬────┐
│comma│delimited│text│
└─────┴─────────┴────┘
</source>
{{Works in|[[Dyalog APL]]}}
Now read [[Simple examples#Split text by delimiter|the full explanation]]…
 
=== Conway's "Game of Life" ===
[[John Scholes]] is famous for the following implementation of ''[[wikipedia:Conway's Game of Life|Conway's Game of Life]]'':
 
[https://tryapl.org/?a=%u22A2world%u21902%202%202%202%u22A40%2012%205%202%204%201&run&a=%7B%u21911%20%u2375%u2228.%u22273%204%3D+/%2C%AF1%200%201%u2218.%u2296%AF1%200%201%u2218.%u233D%u2282%u2375%7D%20world&run Try it now!]
<source lang=apl>
      ⊢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
</source>
{{Works in|[[Dyalog APL]], [[ngn/apl]]}}
Now read the [[Conway's Game of Life|full article]]…
 
<p style="text-align:center">'''[[Simple examples|Further simple examples]] ∙ [[Advanced examples]]'''</p>
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