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== Welcome to {{SITENAME}}! ==
{| style="border-spacing: 1ex;"
This Main Page was automatically created by a wiki creator (a volunteer who created this wiki per a request), and it seems it hasn't been replaced yet.
| style="background:#f9f9f9;border:1px solid #ddd;" colspan="2" |
{| style="border-spacing: 1em;"
|-
| 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.<br>
See the [[overview|navigational overview]] of content.
| [[File:APL logo.png|48px|link=APL logo]]
| [[The name APL|'''APL''']] is an [[wikipedia:Array_programming|array-oriented programming language]]. Its natural, concise [[APL syntax|syntax]] lets you develop shorter programs while thinking more about the problem you're trying to solve than how to express it to a computer.  
|}


=== For the bureaucrat(s) of this wiki ===
|- style="vertical-align:top"
Hello, and welcome at your new wiki! Thank you for choosing Miraheze for the hosting of your wiki, and we hope you will enjoy our hosting.
| style="background:#f5fffa;border:1px solid #cef2e0;padding:0 1em" |
<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, quite a few implementations are now free without feature limitations, several can be tried online, and many are [[List of open-source array languages|open source]].


You can immediately start working on your wiki, whenever you want.
<p style="text-align:center">'''[[Running APL]] ∙ [https://tryapl.org/ Try APL online]'''</p>


Need help? No problem! We will help you with your wiki as needed. To make a start we have added a few links about working with MediaWiki:
| style="background:#f5faff;border:1px solid #cee0f2;padding:0 1em" |
* <span class="plainlinks">[https://www.mediawiki.org/wiki/Help:Contents MediaWiki guide (e.g. navigation, editing, deleting pages, blocking users)]</span>
<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;>Hello world</h2>
* <span class="plainlinks">[https://meta.miraheze.org/wiki/FAQ Miraheze FAQ]</span>
*<span class="plainlinks">[https://meta.miraheze.org/wiki/Request_features Request settings changes on your wiki. (Extensions and Logo/Favicon changes should be done through Special:ManageWiki on your wiki].</span>


==== But Miraheze, I still don't understand X! ====
Taking up a new programming language can be a daunting task. While it can appear cryptic at first, you can learn to [[semantic density|read]], write and [[mnemonics|remember]] APL with little effort. There is plenty of material to help you in the process.
Well, that's no problem. Even if something isn't explained in the documentation/FAQ, we still are happy to help you. You can find us here:
* <span class="plainlinks">[https://meta.miraheze.org/wiki/Help_center On our own Miraheze wiki]</span>
* On IRC in #miraheze on irc.freenode.net ([irc://irc.freenode.net/#miraheze direct link]; [http://webchat.freenode.net?channels=%23miraheze webchat])


=== For a visitor of this wiki ===
<p style="text-align:center">'''[[Introductions]] ∙ [[Learning resources]]'''</p>
Hello, the default Main Page of this wiki (this is the default Main Page) has not been replaced yet by the bureaucrat(s) of this wiki. The bureaucrat(s) might still be working on a Main Page, so please check this page again later!
|- style="vertical-align:top"
| style="background:#faf5ff;border:1px solid #e0cef2;padding:0 1em" |
<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 it?</h2>
APL is used by both hobbyists and application developers. There are active [[:Category:user groups|user groups]] all around the globe, many of these hold regular in-person meet-ups. There are also multiple online [[chat rooms and forums]].
 
<p style="text-align:center">'''[[Case studies]] ∙ [[Job listings]] ∙ [[Conferences and activities]]'''</p>
 
| style="background:#fff5fa;border:1px solid #f2cee0;padding:0 1em" |
<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:About|APL Wiki]] is an online open-content [[wikipedia:wiki|wiki]]; 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 [[APL_Wiki:Content_guidelines|its content]].
<p style="text-align:center">'''[[Help:Contributing|How to contribute]] ∙ [[Special:NewPages|New pages]] ∙ [[Special:WantedPages| Wanted pages]]'''</p>
|-
 
| colspan="2" style="border:1px solid #e2e2e2;padding:0 1em" |
<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 than even the shortest fitting name. For example <syntaxhighlight lang=apl inline>≠⊆⊢</syntaxhighlight> is but three characters, while you 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!]
<syntaxhighlight lang=apl>
      ','(≠⊆⊢)'comma,delimited,text'
┌─────┬─────────┬────┐
│comma│delimited│text│
└─────┴─────────┴────┘
</syntaxhighlight>
{{Works in|[[Dyalog APL]]}}
'''[[Simple examples#Split text by delimiter|Full explanation…]]'''
 
=== Conway's "Game of Life" ===
[[John Scholes]] is famous for the following implementation of ''[[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!]
<syntaxhighlight 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
</syntaxhighlight>
{{Works in|[[Dyalog APL]], [[ngn/apl]]}}
'''[[John Scholes' Conway's Game of Life|Full article…]]'''
 
<p style="text-align:center">'''[[Simple examples|Further simple examples]] ∙ [[Advanced examples]]'''</p>
|}

Latest revision as of 22:15, 10 September 2022


Welcome to APL Wiki,

447 articles about APL that anyone can edit.
See the navigational overview of content.

APL logo.png APL is an array-oriented programming language. Its natural, concise syntax lets you develop shorter programs while thinking more about the problem you're trying to solve than how to express it to a computer.

Running APL

Traditionally a commercial language, quite a few implementations are now free without feature limitations, several can be tried online, and many are open source.

Running APLTry APL online

Hello world

Taking up a new programming language can be a daunting task. While it can appear cryptic at first, you can learn to read, write and remember APL with little effort. There is plenty of material to help you in the process.

IntroductionsLearning resources

Who uses it?

APL is used by both hobbyists and application developers. There are active user groups all around the globe, many of these hold regular in-person meet-ups. There are also multiple online chat rooms and forums.

Case studiesJob listingsConferences and activities

Contributing

APL Wiki is an online open-content wiki; 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.

How to contributeNew pages Wanted pages

Examples

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 than even the shortest fitting name. For example ≠⊆⊢ is but three characters, while you would need five for the name Split:

Try it now!

      ','(≠⊆⊢)'comma,delimited,text'
┌─────┬─────────┬────┐
│comma│delimited│text│
└─────┴─────────┴────┘
Works in: Dyalog APL

Full explanation…

Conway's "Game of Life"

John Scholes is famous for the following implementation of Conway's Game of Life:

Try it now!

      ⎕←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

Full article…

Further simple examplesAdvanced examples