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== {{ | {| style="border-spacing: 1ex;" | ||
| 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. | |||
|} | |||
|- style="vertical-align:top" | |||
| 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]]. | |||
<p style="text-align:center">'''[[Running APL]] ∙ [https://tryapl.org/ Try APL online]'''</p> | |||
| style="background:#f5faff;border:1px solid #cee0f2;padding:0 1em" | | |||
<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> | |||
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. | |||
[[ | |||
[[ | <p style="text-align:center">'''[[Introductions]] ∙ [[Learning resources]]'''</p> | ||
|- 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> | |||
|} | |} | ||