Learning resources

For non-programmers
Some of the best resources for somebody new to APL and programming in general are: 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.
 * APL Wiki's simple examples
 * The Learn tab on TryAPL
 * The book Mastering Dyalog APL by Bernard Legrand
 * The Zark APL Tutor
 * APL a Day: Introduction, Functions, Arrays, Values, Arrays have Shape

If you get stuck, don't hesitate to ask your questions in the APL Orchard chat room.

For non-APL programmers
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.
 * APL Wiki's advanced examples
 * APL Cultivation (chat lessons)
 * TryAPL online interpreter with lessons
 * Learn X in Y minutes
 * Let's Learn A Programming Language
 * APLWiki list of Books and Publications ← Migrate https://old.aplwiki.com/BooksAndPublications
 * Mastering Dyalog APL
 * GitHub repository
 * Zark tutorial
 * Trying APL
 * Artificial Neural Networks
 * FizzBuzz

For novice APLers
If you already have a fair grasp of APL's primitive functions and operators, you can sharpen your skills by challenging yourself with these:


 * APL Crosswords: 1 4 5 — Fill in expressions and snippets to fulfil all the clues.


 * 2016 Year Game: Find APL expressions involving exactly the digits 2 0 1 6 in that order to equal the numbers 0 to 100.


 * 2017 Code Golf Challenge: Find the shortest possible APL expression that evaluates 1…52 without using any number or character literals.


 * APL Problem Solving Competitions — Try to solve past years' problems.


 * APL-eusis: A game for honing your ability to "think in APL".

For old APLers
In the last decade, several implementations have extended APL with new primitives:

Primitives
Functions:  Same, Right; Same, Left; Materialise, Index; Depth, Match; Tally, Not Match; Where, Interval Index; Nest, Partition

Operators:  Bind, Compose; Rank; Key; Stencil; Variant

Lambdas

 * Intro
 * Details
 * Operators
 * The dfns workspace is a collection of categorized utility dfns and dops with extensive comments and notes.

Tacit programming

 * Dyalog APL documentation: Intro, Details


 * Videos: Short, Long


 * APL Cultivation lesson: Transcribing to and reading trains

Other features

 * Keywords
 * Object-oriented programming

How to's for advanced APLers

 * Error trapping with Dyalog APL


 * Error trapping in Dyalog APL forms


 * Calling APL from other languages


 * Calling other languages from APL


 * Performance tuning


 * APL on the web


 * Parallel computing


 * Cryptography ← Migrate https://old.aplwiki.com/CryptographyWithDyalogAndDotNet