Learning resources: Difference between revisions

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== Haven't used APL in a while? ==
== Haven't used APL in a while? ==
Those who learned APL "in the early days" should note that several implementations have made significant extensions to the language and system in the last decade or two.
Those who learned APL "in the early days" should note that several implementations have made significant extensions to the language and system in the last decade or two.
 
<div style="column-width:40em">
* General video: [https://www.youtube.com/watch?v=XN1l1WiYc_o Dyalog APL for other APL users] ([[assignment]], [[control structure]]s, [[namespace]]s, [[migration level]], [[Bind]], [[user-defined operator]]s, [[dfn]]s, [[Error trapping with Dyalog APL|error trapping]], [[shyness]], [[namelist]]s, [[GCD]], [[LCM]], [[Power (operator)|Power operator]], and more)
'''General'''
 
* [https://www.youtube.com/watch?v=XN1l1WiYc_o Dyalog APL for other APL users] (video)
* New primitive functions: <syntaxhighlight lang=apl inline>⊢</syntaxhighlight> [[Identity|Same]], [[Right_identity|Right]]; <syntaxhighlight lang=apl inline>⊣</syntaxhighlight> [[Identity|Same]], [[Left_identity|Left]]; <syntaxhighlight lang=apl inline>⌷</syntaxhighlight> [[Materialise]], [[Squad indexing|Index]]; <syntaxhighlight lang=apl inline>≡</syntaxhighlight> [[Depth]], [[Match]]; <syntaxhighlight lang=apl inline>≢</syntaxhighlight> [[Tally]], [[Not Match]]; <syntaxhighlight lang=apl inline>≠</syntaxhighlight> [[Nub Sieve]]; <syntaxhighlight lang=apl inline>⍸</syntaxhighlight> [[Where]], [[Interval Index]]; <syntaxhighlight lang=apl inline>⊆</syntaxhighlight> [[Nest]], [[Partition]]
* [[Assignment]]
 
* [[Control structure]]s
* New primitive operators: <syntaxhighlight lang=apl inline>⍨</syntaxhighlight> [[Commute]], [[Constant]]; <syntaxhighlight lang=apl inline>@</syntaxhighlight> [[At]]; <syntaxhighlight lang=apl inline>∘</syntaxhighlight> [[Bind]], [[Beside]]; <syntaxhighlight lang=apl inline>⍤</syntaxhighlight> [[Atop (operator)|Atop]], [[Rank]];  <syntaxhighlight lang=apl inline>⍥</syntaxhighlight> [[Over]];  <syntaxhighlight lang=apl inline>⍤</syntaxhighlight> [[Rank operator|Rank]]; <syntaxhighlight lang=apl inline>⌸</syntaxhighlight> [[Key]]; <syntaxhighlight lang=apl inline>⌺</syntaxhighlight> [[Stencil]]; <syntaxhighlight lang=apl inline>⍠</syntaxhighlight> [[Variant]]; <syntaxhighlight lang=apl inline>&</syntaxhighlight> [[Spawn]]
* [[Namespace]]s
 
* [[Migration level]]
* Lambdas ([[dfn]]s): [https://help.dyalog.com/16.0/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Functions%20and%20Operators.htm Intro]; [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/MultiLine%20Dynamic%20Functions.htm Details]; [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Operators.htm Operators]; [https://dfns.dyalog.com/n_contents.htm The dfns workspace] (collection of categorized utilities with extensive comments and notes)
* [[User-defined operator]]s
 
* [[Error trapping with Dyalog APL|Error trapping]]
* [[Tacit programming]]: [[Dyalog APL]] documentation: [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm Intro]; [https://help.dyalog.com/latest/Content/Language/Introduction/Trains.htm Details]; [https://www.youtube.com/watch?v=kt4lMZbn-so short video]; [https://www.youtube.com/watch?v=A2LqqBosvY0 long video]; [https://chat.stackexchange.com/rooms/52405/conversation/lesson-23-transcribing-to-and-reading-trains APL Cultivation lesson]; [[Function composition]]
* [[Shyness]]
 
* [[Namelist]]s
* Other features and concepts: [[Keyword]]s; [[Object-oriented programming]]; [[namespace]]s; [[Total array ordering]]; [[Leading axis theory]]; [[Complex number]]s
* [[Keyword]]s
 
* [[Object-oriented programming]]
* [[Total array ordering]]
* [[Leading axis theory]]
* [[Complex number]]s
'''New primitive functions'''
* [[GCD]] and [[LCM]]
* [[Identity|Same]] (<syntaxhighlight lang=apl inline>⊢</syntaxhighlight> and <syntaxhighlight lang=apl inline>⊣</syntaxhighlight>)
* [[Materialise]] and [[Squad indexing|Index]] (<syntaxhighlight lang=apl inline>⌷</syntaxhighlight>)
* [[Depth]] and [[Match]] (<syntaxhighlight lang=apl inline>≡</syntaxhighlight>)
* [[Tally]] and [[Not Match]] (<syntaxhighlight lang=apl inline>≢</syntaxhighlight>)
* [[Nub Sieve]] (<syntaxhighlight lang=apl inline>≠</syntaxhighlight>)
* [[Where]] and [[Interval Index]] (<syntaxhighlight lang=apl inline>⍸</syntaxhighlight>)
* [[Nest]] and [[Partition]] (<syntaxhighlight lang=apl inline>⊆</syntaxhighlight>)
'''New primitive operators'''
* [[Power (operator)|Power operator]]
* [[Commute]] and [[Constant]] (<syntaxhighlight lang=apl inline>⍨</syntaxhighlight>)
* [[At]] (<syntaxhighlight lang=apl inline>@</syntaxhighlight>)
* [[Bind]] and [[Beside]] (<syntaxhighlight lang=apl inline>∘</syntaxhighlight>)
* [[Atop (operator)|Atop]] and [[Rank]] (<syntaxhighlight lang=apl inline>⍤</syntaxhighlight>)
* [[Over]] (<syntaxhighlight lang=apl inline>⍥</syntaxhighlight>)
* [[Key]] (<syntaxhighlight lang=apl inline>⌸</syntaxhighlight>)
* [[Stencil]] (<syntaxhighlight lang=apl inline>⌺</syntaxhighlight>)
* [[Variant]] (<syntaxhighlight lang=apl inline>⍠</syntaxhighlight>)
* [[Spawn]] (<syntaxhighlight lang=apl inline>&</syntaxhighlight>)
'''Lambdas ([[dfn]]s)'''
* [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Functions%20and%20Operators.htm Intro]
* [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/MultiLine%20Dynamic%20Functions.htm Details]
* [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Operators.htm Operators]
* [https://dfns.dyalog.com/n_contents.htm The dfns workspace] (collection of categorized utilities with extensive comments and notes)
'''[[Tacit programming]]'''
* [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm Intro]
* [https://help.dyalog.com/latest/Content/Language/Introduction/Trains.htm Details]
* [https://www.youtube.com/watch?v=kt4lMZbn-so Short video]
* [https://www.youtube.com/watch?v=A2LqqBosvY0 Long video]
* [https://chat.stackexchange.com/rooms/52405/conversation/lesson-23-transcribing-to-and-reading-trains APL Cultivation lesson]
* [[Function composition]]
</div>
{{APL development}}[[Category:Lists]][[Category:Resources]]
{{APL development}}[[Category:Lists]][[Category:Resources]]

Revision as of 08:48, 11 November 2022

"I have long been struck by the contrast between the success with which the adventurous learn APL by simply using it, and the frequent failure of lecture courses to communicate the simplicity and applicability of the language."

Ken Iverson. A Working Introduction to APL, 1981.

To facilitate self-study, the resources here are classified by target audience. However, if you get stuck, don't hesitate to request help in a chat room (APL Farm or APL Orchard) or ask a question on Stack Exchange.

It may be beneficial to learn the APL terminology.

For non-programmers

Some of the best resources for somebody new to APL and programming in general are:

Interactive

Books

Text

Video series

Follow one or a couple of these tutorials through and play around a bit. To learn APL the advice is similar to that for learning other languages: have a goal (something you want to accomplish) and try to do it. Along the way you are sure to come across the pitfalls and gotchas of the language, and with time you may come to understand what APL thinking means.

For programmers unfamiliar with APL

This is a list of tutorials and other resources of interest to someone who knows about programming or is familiar with another programming language, but wants to learn more about APL. See also APL Wiki's lists of advanced examples, books, and papers. "Trying APL" has examples for all primitives.

Interactive

Text courses

Video

Books

For novice APLers

Besides for APL Wiki's advanced examples, you can hone your APL skill with these materials.

Books

Video series

Challenges

For advanced APLers

Here is a list of "how-to"s on various subjects:

Haven't used APL in a while?

Those who learned APL "in the early days" should note that several implementations have made significant extensions to the language and system in the last decade or two.

General

New primitive functions

New primitive operators

Lambdas (dfns)

Tacit programming

APL development [edit]
Interface Session ∙ Typing glyphs (on Linux) ∙ Fonts ∙ Text editors
Publications Introductions ∙ Learning resources ∙ Simple examples ∙ Advanced examples ∙ Mnemonics ∙ ISO 8485:1989 ∙ ISO/IEC 13751:2001 ∙ A Dictionary of APL ∙ Case studies ∙ Documentation suites ∙ Books ∙ Papers ∙ Videos ∙ APL Quote Quad ∙ Vector journal ∙ Terminology (Chinese, German) ∙ Neural networks ∙ Error trapping with Dyalog APL (in forms)
Sharing code Backwards compatibility ∙ APLcart ∙ APLTree ∙ APL-Cation ∙ Dfns workspace ∙ Tatin ∙ Cider
Implementation Resources ∙ Open-source ∙ Magic function ∙ Performance ∙ APL hardware
Developers Timeline of corporations ∙ APL2000 ∙ Dyalog ∙ IBM ∙ IPSA ∙ STSC
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